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Schedule III - Real Estate and Accumulated Depreciation (Details) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 1,001,349,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 5,842,846,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 823,548,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,001,349,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 6,666,394,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 7,667,743,000 $ 7,376,690,000 $ 7,387,597,000 $ 6,998,233,000
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,118,839,000 $ 1,890,656,000 $ 1,780,694,000 $ 1,557,004,000
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 5,548,904,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances 865,970,000      
Current Communities [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land 1,001,349,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 5,366,204,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 823,548,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,001,349,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 6,189,752,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 7,191,101,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,115,633,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 5,075,468,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances 865,970,000      
Current Communities [Member] | Camden Chandler [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land 5,511,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 62,418,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 103,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,511,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 62,521,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 68,032,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 6,734,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 61,298,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2016      
Current Communities [Member] | Camden Copper Square [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,825,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 23,672,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,446,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,825,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 31,118,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 35,943,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 17,841,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 18,102,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2000      
Current Communities [Member] | Camden Foothills [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 11,006,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 33,712,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 159,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 11,006,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 33,871,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 44,877,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 4,746,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 40,131,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2014      
Current Communities [Member] | Camden Hayden [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 9,248,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 35,255,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 75,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 9,248,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 35,330,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 44,578,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 4,374,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 40,204,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2015      
Current Communities [Member] | Camden Legacy [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,068,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 26,612,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 13,253,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,068,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 39,865,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 43,933,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 25,178,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 18,755,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1998      
Current Communities [Member] | Camden Montierra [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 13,687,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 31,727,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,292,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 13,687,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 37,019,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 50,706,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,733,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 42,973,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Pecos Ranch [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,362,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 24,492,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,177,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,362,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 29,669,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 33,031,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,973,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 25,058,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden San Marcos [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 11,520,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 35,166,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,765,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 11,520,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 40,931,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 52,451,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 8,788,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 43,663,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden San Paloma [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 6,480,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 23,045,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 9,527,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,480,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 32,572,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 39,052,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 16,506,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 22,546,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2002      
Current Communities [Member] | Camden Sotelo [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,376,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 30,576,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 1,131,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,376,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 31,707,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 35,083,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 5,219,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 29,864,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2013      
Current Communities [Member] | Camden Crown Valley [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 9,381,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 54,210,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 9,799,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 9,381,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 64,009,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 73,390,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 32,303,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 41,087,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2001      
Current Communities [Member] | Camden Glendale [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 21,492,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 94,876,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 173,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 21,492,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 95,049,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 116,541,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 10,004,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 106,537,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2015      
Current Communities [Member] | Camden Harbor View [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 16,079,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 127,459,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 20,030,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 16,079,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 147,489,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 163,568,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 60,756,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 102,812,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 92,631,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2003      
Current Communities [Member] | Camden Main Jamboree [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 17,363,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 75,387,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 1,777,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 17,363,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 77,164,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 94,527,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 18,534,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 75,993,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 46,723,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2008      
Current Communities [Member] | Camden Martinique [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 28,401,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 51,861,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 20,895,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 28,401,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 72,756,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 101,157,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 43,025,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 58,132,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1998      
Current Communities [Member] | Camden Sea Palms [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,336,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 9,930,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,317,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,336,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 15,247,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 19,583,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 8,785,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 10,798,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1998      
Current Communities [Member] | The Camden [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 18,286,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 118,350,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 75,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 18,286,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 118,425,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 136,711,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 8,198,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 128,513,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2016      
Current Communities [Member] | Camden Landmark [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 17,339,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 71,315,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 2,389,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 17,339,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 73,704,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 91,043,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 14,558,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 76,485,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Old Creek [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 20,360,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 71,777,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,252,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 20,360,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 77,029,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 97,389,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 25,821,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 71,568,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2007      
Current Communities [Member] | Camden Sierra At Otay Ranch [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 10,585,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 49,781,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,567,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 10,585,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 55,348,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 65,933,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 25,344,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 40,589,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2003      
Current Communities [Member] | Camden Tuscany [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,330,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 36,466,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 4,682,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,330,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 41,148,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 44,478,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 18,464,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 26,014,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2003      
Current Communities [Member] | Camden Vineyards [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,367,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 28,494,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 4,109,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,367,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 32,603,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 36,970,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 15,482,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 21,488,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2002      
Current Communities [Member] | Camden Belleview Station [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 8,091,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 44,003,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 2,813,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 8,091,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 46,816,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 54,907,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 8,695,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 46,212,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Caley [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 2,047,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 17,445,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 6,456,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,047,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 23,901,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 25,948,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 12,789,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 13,159,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 15,337,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2000      
Current Communities [Member] | Camden Denver West [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 6,396,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 51,552,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 10,070,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,396,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 61,622,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 68,018,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 10,828,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 57,190,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Flatirons [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 6,849,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 72,541,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 191,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,849,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 72,732,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 79,581,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 9,767,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 69,814,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2015      
Current Communities [Member] | Camden Highlands Ridge [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 2,612,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 34,726,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 15,068,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,612,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 49,794,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 52,406,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 25,825,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 26,581,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1996      
Current Communities [Member] | Camden Interlocken [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 5,293,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 31,612,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 12,546,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,293,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 44,158,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 49,451,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 23,633,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 25,818,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 27,406,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1999      
Current Communities [Member] | Camden Lakeway [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,915,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 34,129,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 17,084,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,915,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 51,213,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 55,128,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 28,412,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 26,716,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 29,240,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1997      
Current Communities [Member] | Camden Lincoln Station [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,648,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 52,066,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements (381,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,648,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 51,685,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 56,333,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,475,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 53,858,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2017      
Current Communities [Member] | Camden Ashburn Farms [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,835,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 22,604,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,020,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,835,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 27,624,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 32,459,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 10,134,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 22,325,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden College Park [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 16,409,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 91,503,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 8,675,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 16,409,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 100,178,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 116,587,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 22,575,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 94,012,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2008      
Current Communities [Member] | Camden Dulles Station [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 10,807,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 61,548,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 3,836,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 10,807,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 65,384,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 76,191,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 20,218,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 55,973,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2008      
Current Communities [Member] | Camden Fair Lakes [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 15,515,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 104,223,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 12,081,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 15,515,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 116,304,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 131,819,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 44,665,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 87,154,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Fairfax Corner [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 8,484,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 72,953,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 9,013,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 8,484,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 81,966,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 90,450,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 29,995,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 60,455,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2006      
Current Communities [Member] | Camden Fallsgrove [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 9,408,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 43,647,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,089,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 9,408,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 48,736,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 58,144,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 19,594,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 38,550,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Grand Parc [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 7,688,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 35,900,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 2,620,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 7,688,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 38,520,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 46,208,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 14,655,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 31,553,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Landsdowne [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 15,502,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 102,267,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 14,509,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 15,502,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 116,776,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 132,278,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 43,817,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 88,461,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Largo Town Center [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 8,411,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 44,163,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 3,920,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 8,411,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 48,083,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 56,494,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 18,444,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 38,050,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Monument Place [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 9,030,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 54,089,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 1,762,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 9,030,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 55,851,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 64,881,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 19,019,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 45,862,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2007      
Current Communities [Member] | Camden NoMa [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 19,442,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 82,304,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 141,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 19,442,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 82,445,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 101,887,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 13,947,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 87,940,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2014      
Current Communities [Member] | Camden NoMa II [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 17,331,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 89,919,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements (8,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 17,331,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 89,911,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 107,242,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 5,565,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 101,677,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2017      
Current Communities [Member] | Camden Potomac Yard [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 16,498,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 88,317,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 2,178,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 16,498,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 90,495,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 106,993,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 28,909,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 78,084,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2008      
Current Communities [Member] | Camden Roosevelt [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 11,470,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 45,785,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 2,960,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 11,470,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 48,745,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 60,215,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 18,448,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 41,767,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Russett [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 13,460,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 61,837,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 6,000,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 13,460,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 67,837,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 81,297,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 26,638,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 54,659,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 45,030,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Silo Creek [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 9,707,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 45,301,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 4,272,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 9,707,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 49,573,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 59,280,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 18,634,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 40,646,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Aventura [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 12,185,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 47,616,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 12,122,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 12,185,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 59,738,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 71,923,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 25,146,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 46,777,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Boca Raton [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 2,201,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 50,057,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 167,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,201,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 50,224,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 52,425,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 6,723,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 45,702,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2014      
Current Communities [Member] | Camden Brickell [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 14,621,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 57,031,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 13,005,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 14,621,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 70,036,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 84,657,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 28,728,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 55,929,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Doral [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 10,260,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 40,416,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 6,993,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 10,260,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 47,409,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 57,669,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 18,578,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 39,091,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Doral Villas [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 6,476,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 25,543,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,197,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,476,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 32,740,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 39,216,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 13,446,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 25,770,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Las Olas [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 12,395,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 79,518,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 11,202,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 12,395,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 90,720,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 103,115,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 35,790,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 67,325,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Plantation [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 6,299,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 77,964,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 9,946,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,299,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 87,910,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 94,209,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 34,816,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 59,393,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Portofino [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 9,867,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 38,702,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,850,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 9,867,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 46,552,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 56,419,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 18,132,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 38,287,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Hunters Creek [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,156,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 20,925,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,445,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,156,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 26,370,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 30,526,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 10,958,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 19,568,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Lago Vista [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,497,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 29,623,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,415,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,497,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 35,038,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 38,535,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 14,083,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 24,452,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden LaVina [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 12,907,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 42,617,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 499,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 12,907,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 43,116,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 56,023,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 10,830,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 45,193,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Lee Vista [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,350,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 34,643,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,356,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,350,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 41,999,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 46,349,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 22,657,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 23,692,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2000      
Current Communities [Member] | Camden Orange Court [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 5,319,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 40,733,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 2,929,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,319,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 43,662,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 48,981,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 14,148,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 34,833,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2008      
Current Communities [Member] | Camden Town Square [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 13,127,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 45,997,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 576,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 13,127,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 46,573,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 59,700,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 10,374,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 49,326,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden World Gateway [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 5,785,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 51,821,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,804,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,785,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 59,625,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 65,410,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 23,132,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 42,278,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Bay [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 7,450,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 63,283,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 13,384,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 7,450,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 76,667,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 84,117,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 40,385,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 43,732,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1998/2002      
Current Communities [Member] | Camden Montague [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,576,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 16,534,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 335,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,576,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 16,869,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 20,445,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 4,364,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 16,081,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Preserve [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 1,206,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 17,982,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,683,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,206,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 25,665,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 26,871,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 15,942,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 10,929,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1997      
Current Communities [Member] | Camden Royal Palms [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 2,147,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 38,339,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 3,290,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,147,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 41,629,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 43,776,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 14,273,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 29,503,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2007      
Current Communities [Member] | Camden Westchase Park [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 11,955,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 36,254,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 423,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 11,955,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 36,677,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 48,632,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 8,526,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 40,106,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Brookwood [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 7,174,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 31,984,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 8,428,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 7,174,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 40,412,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 47,586,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 17,047,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 30,539,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 22,615,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Buckhead Square [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 13,200,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 43,785,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 317,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 13,200,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 44,102,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 57,302,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 965,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 56,337,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2017      
Current Communities [Member] | Camden Creekstone [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 5,017,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 19,912,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 3,564,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,017,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 23,476,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 28,493,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 4,604,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 23,889,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Deerfield [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,895,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 21,922,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,966,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,895,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 29,888,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 34,783,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 12,528,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 22,255,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 19,211,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Dunwoody [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 5,290,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 23,642,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 8,495,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,290,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 32,137,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 37,427,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 13,950,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 23,477,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 21,159,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Fourth Ward [Member] [Domain]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 10,477,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 51,258,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 929,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 10,477,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 52,187,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 62,664,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,111,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 55,553,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2014      
Current Communities [Member] | Camden Midtown Atlanta [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 6,196,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 33,828,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 10,212,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,196,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 44,040,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 50,236,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 17,588,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 32,648,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 20,556,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Paces [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 15,262,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 102,512,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 455,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 15,262,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 102,967,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 118,229,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 13,315,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 104,914,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2015      
Current Communities [Member] | Camden Peachtree City [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 6,536,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 29,063,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 6,985,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,536,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 36,048,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 42,584,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 14,769,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 27,815,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Shiloh [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,181,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 18,798,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,473,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,181,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 24,271,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 28,452,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 10,473,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 17,979,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 10,524,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden St Clair [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 7,526,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 27,486,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,623,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 7,526,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 35,109,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 42,635,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 15,392,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 27,243,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 21,637,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Stockbridge [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 5,071,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 22,693,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 4,344,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,071,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 27,037,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 32,108,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 11,287,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 20,821,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 14,326,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Vantage [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 11,787,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 68,822,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 2,651,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 11,787,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 71,473,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 83,260,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 12,233,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 71,027,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2013      
Current Communities [Member] | Camden Ballantyne [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,503,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 30,250,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 8,352,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,503,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 38,602,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 43,105,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 16,983,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 26,122,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 26,014,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Cotton Mills [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,246,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 19,147,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 6,190,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,246,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 25,337,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 29,583,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 11,518,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 18,065,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Dilworth [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 516,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 16,633,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 2,317,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 516,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 18,950,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 19,466,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,336,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 12,130,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 13,067,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2006      
Current Communities [Member] | Camden Fairview [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 1,283,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 7,223,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 4,127,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,283,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 11,350,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 12,633,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 5,669,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 6,964,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Foxcroft [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 1,408,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 7,919,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 4,345,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,408,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 12,264,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 13,672,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 6,044,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 7,628,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Foxcroft II [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 1,152,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 6,499,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 2,777,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,152,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 9,276,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 10,428,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 4,154,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 6,274,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Gallery [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 7,930,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 51,684,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 45,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 7,930,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 51,729,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 59,659,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 3,889,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 55,770,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2017      
Current Communities [Member] | Camden Grandview [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 7,570,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 33,859,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 10,249,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 7,570,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 44,108,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 51,678,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 18,110,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 33,568,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Sedgebrook [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 5,266,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 29,211,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,345,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,266,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 36,556,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 41,822,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 16,032,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 25,790,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 21,297,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden South End Square [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 6,625,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 29,175,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 9,753,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,625,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 38,928,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 45,553,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 15,752,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 29,801,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Stonecrest [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,941,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 22,021,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 6,088,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,941,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 28,109,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 32,050,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 12,677,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 19,373,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Touchstone [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 1,203,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 6,772,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 3,234,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,203,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 10,006,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 11,209,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 5,004,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 6,205,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Crest [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,412,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 31,108,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 6,005,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,412,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 37,113,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 41,525,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 14,860,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 26,665,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Governors Village [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,669,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 20,508,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 4,962,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,669,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 25,470,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 29,139,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 10,386,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 18,753,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 12,998,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Lake Pine [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 5,746,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 31,714,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 10,989,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,746,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 42,703,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 48,449,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 17,866,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 30,583,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 26,201,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Manor Park [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 2,535,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 47,159,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 4,279,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,535,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 51,438,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 53,973,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 19,361,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 34,612,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 29,663,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2006      
Current Communities [Member] | Camden Overlook [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,591,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 25,563,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 9,178,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,591,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 34,741,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 39,332,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 15,375,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 23,957,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Reunion Park [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,302,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 18,457,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 8,619,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,302,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 27,076,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 30,378,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 11,167,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 19,211,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 19,952,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Westwood [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,567,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 25,519,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,660,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,567,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 33,179,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 37,746,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 13,261,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 24,485,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 19,900,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Cedar Hills [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 2,684,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 20,931,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 1,106,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,684,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 22,037,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 24,721,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,575,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 17,146,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2008      
Current Communities [Member] | Camden Gaines Ranch [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 5,094,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 37,100,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 10,009,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,094,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 47,109,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 52,203,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 19,724,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 32,479,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2005      
Current Communities [Member] | Camden Huntingdon [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 2,289,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 17,393,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 10,194,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,289,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 27,587,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 29,876,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 17,818,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 12,058,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1995      
Current Communities [Member] | Camden La Frontera [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,250,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 32,376,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 241,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,250,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 32,617,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 35,867,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 4,776,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 31,091,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2015      
Current Communities [Member] | Camden Lamar Heights [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,988,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 42,773,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 228,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,988,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 43,001,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 46,989,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 6,215,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 40,774,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2015      
Current Communities [Member] | Camden Stoneleigh [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,498,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 31,285,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,966,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,498,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 39,251,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 42,749,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 15,902,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 26,847,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2006      
Current Communities [Member] | Camden Breakers [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 1,055,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 13,024,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 9,700,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,055,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 22,724,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 23,779,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 14,605,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 9,174,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1996      
Current Communities [Member] | Camden Copper Ridge [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 1,204,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 9,180,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 9,019,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,204,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 18,199,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 19,403,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 14,754,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 4,649,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1993      
Current Communities [Member] | Camden Addison [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 11,516,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 29,332,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,726,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 11,516,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 37,058,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 48,574,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 10,134,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 38,440,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Belmont [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 12,521,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 61,522,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 3,279,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 12,521,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 64,801,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 77,322,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 12,904,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 64,418,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Buckingham [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 2,704,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 21,251,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 10,085,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,704,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 31,336,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 34,040,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 18,729,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 15,311,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1997      
Current Communities [Member] | Camden Centreport [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 1,613,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 12,644,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 6,497,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,613,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 19,141,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 20,754,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 11,439,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 9,315,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1997      
Current Communities [Member] | Camden Cimarron [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 2,231,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 14,092,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,530,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,231,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 21,622,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 23,853,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 14,753,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 9,100,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1997      
Current Communities [Member] | Camden Farmers Market [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 17,341,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 74,193,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 20,419,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 17,341,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 94,612,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 111,953,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 45,693,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 66,260,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 50,673,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2001/2005      
Current Communities [Member] | Camden Henderson [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,842,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 15,256,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 482,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,842,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 15,738,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 19,580,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 3,645,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 15,935,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Legacy Creek [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 2,052,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 12,896,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 6,421,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,052,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 19,317,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 21,369,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 12,409,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 8,960,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1997      
Current Communities [Member] | Camden Legacy Park [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 2,560,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 15,449,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 7,609,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,560,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 23,058,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 25,618,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 14,474,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 11,144,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 13,855,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1997      
Current Communities [Member] | Camden Valley Park [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 3,096,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 14,667,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 14,471,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,096,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 29,138,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 32,234,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 27,328,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 4,906,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1994      
Current Communities [Member] | Camden Victory Park [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 13,445,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 71,687,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 65,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 13,445,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 71,752,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 85,197,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 5,802,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 79,395,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2016      
Current Communities [Member] | Camden City Centre [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,976,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 44,735,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 2,736,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,976,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 47,471,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 52,447,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 16,409,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 36,038,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 33,770,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2007      
Current Communities [Member] | Camden City Centre II [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 5,101,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 28,131,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 163,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,101,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 28,294,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 33,395,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 6,663,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 26,732,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2013      
Current Communities [Member] | Camden Greenway [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 16,916,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 43,933,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 19,628,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 16,916,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 63,561,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 80,477,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 36,831,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 43,646,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 52,314,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1999      
Current Communities [Member] | Camden Holly Springs [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 11,108,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 42,852,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 11,453,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 11,108,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 54,305,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 65,413,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 13,854,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 51,559,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Midtown [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,583,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 18,026,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 10,068,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,583,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 28,094,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 32,677,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 16,881,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 15,796,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 28,037,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1999      
Current Communities [Member] | Camden Oak Crest [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 2,078,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 20,941,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,604,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,078,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 26,545,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 28,623,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 12,735,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 15,888,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 17,293,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2003      
Current Communities [Member] | Camden Park [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 4,922,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 16,453,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,781,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,922,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 22,234,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 27,156,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 5,563,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 21,593,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Plaza [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 7,204,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 31,044,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 2,026,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 7,204,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 33,070,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 40,274,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 8,032,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 32,242,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 19,835,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2007      
Current Communities [Member] | Camden Post Oak [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 14,056,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 92,515,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 15,212,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 14,056,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 107,727,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 121,783,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 17,884,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 103,899,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2013      
Current Communities [Member] | Camden Royal Oaks [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 1,055,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 20,046,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 1,868,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,055,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 21,914,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 22,969,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 8,549,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 14,420,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2006      
Current Communities [Member] | Camden Royal Oaks II [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 587,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 12,743,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 23,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 587,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 12,766,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 13,353,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 3,123,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 10,230,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Stonebridge [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 1,016,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 7,137,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 5,966,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,016,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 13,103,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 14,119,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 8,619,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 5,500,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1993      
Current Communities [Member] | Camden Sugar Grove [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 7,614,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 27,594,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 3,446,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 7,614,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 31,040,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 38,654,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,076,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 31,578,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2012      
Current Communities [Member] | Camden Travis Street [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 1,780,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 29,104,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 1,019,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,780,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 30,123,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 31,903,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 9,197,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 22,706,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 21,595,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2010      
Current Communities [Member] | Camden Vanderbilt [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 16,076,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 44,918,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 22,706,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 16,076,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 67,624,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 83,700,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 44,273,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 39,427,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 73,111,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 1994/1997      
Current Communities [Member] | Camden Whispering Oaks [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 1,188,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 26,242,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 1,317,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,188,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 27,559,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 28,747,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 9,481,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 19,266,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date 2008      
Construction Communities [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 0      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 346,665,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 346,665,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 346,665,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 3,206,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 343,459,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances 0      
Construction Communities [Member] | Camden Shady Grove [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 112,492,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 112,492,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 112,492,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 3,206,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 109,286,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Construction Communities [Member] | Camden McGowen Station [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements $ 65,755,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 65,755,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 65,755,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 65,755,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Construction Communities [Member] | Camden Washingtonian [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements $ 65,651,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 65,651,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 65,651,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 65,651,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Construction Communities [Member] | Camden North End I [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements $ 53,070,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 53,070,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 53,070,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 53,070,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Construction Communities [Member] | Camden Grandview II [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements $ 11,059,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 11,059,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 11,059,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 11,059,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Construction Communities [Member] | Camden RiNo [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements $ 23,590,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 23,590,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 23,590,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 23,590,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Construction Communities [Member] | Camden Downtown I [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements $ 15,048,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 15,048,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 15,048,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 15,048,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Development Pipeline Communities [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 0      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 113,662,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 113,662,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 113,662,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 113,662,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances 0      
Development Pipeline Communities [Member] | Camden Buckhead [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 17,923,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 17,923,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 17,923,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 17,923,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Development Pipeline Communities [Member] | Camden Atlantic [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements $ 15,499,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 15,499,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 15,499,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 15,499,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Development Pipeline Communities [Member] | Camden Arts District [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements $ 19,265,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 19,265,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 19,265,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 19,265,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Development Pipeline Communities [Member] | Camden Hillcrest [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements $ 23,593,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 23,593,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 23,593,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 23,593,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Development Pipeline Communities [Member] | Camden Gallery II [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements $ 1,417,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 1,417,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 1,417,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 1,417,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Development Pipeline Communities [Member] | Camden North End II [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements $ 12,222,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 12,222,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 12,222,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 12,222,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Development Pipeline Communities [Member] | Camden Paces III [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements $ 13,643,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 13,643,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 13,643,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 13,643,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Development Pipeline Communities [Member] | Camden Downtown II [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements $ 10,100,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 10,100,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 10,100,000      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 10,100,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Land Holdings [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 11,148,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 11,148,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 11,148,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 11,148,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Corporate [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 5,167,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 5,167,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 5,167,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation $ 5,167,000      
Real Estate And Accumulated Depreciation Construction Completion Or Acquisition Date N/A      
Total Land Holdings and Corporate [Member]        
Real Estate and Accumulated Depreciation, Initial Cost of Land $ 0      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 16,315,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 16,315,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 16,315,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Real Estate And Accumulated Depreciation Total Cost Of Real Estate Assets Net Of Accumulated Depreciation 16,315,000      
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 0