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Reportable Segments - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jul. 17, 2014 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2013
Segment Reporting Disclosure [Line Items] |  |  |  |  |  |
Total property operations expenses |  | $ 172,444 | $ 195,037 | $ 486,483 | $ 501,687 |
Revenue for Reportable Segment |  | 196,783 | 183,881 | 573,417 | 536,331 |
Operating Costs and Expenses |  | 102,213 | 94,229 | 287,953 | 267,836 |
Operating Income Loss Before Depreciation And Other |  | 94,570 | 89,652 | 285,464 | 268,495 |
Interest Income |  | 1,881 | 2,072 | 5,605 | 5,809 |
Real Estate Depreciation Expense and Rental Homes |  | (27,831) | (26,460) | (83,234) | (81,793) |
Amortization of Intangible Assets for Continuing Operations |  | (1,075) | (485) | (3,791) | (803) |
Operating Income (Loss) |  | 67,545 | 64,779 | 204,044 | 191,708 |
Major customers description |  |  |  | All revenues are from external customers and there is no customer who contributed 10% or more of our total revenues during the quarters or nine months ended September 30, 2014 or 2013. |  |
Corporate Interest Income |  | 21 | 128 | 872 | 364 |
Income from other investments, net |  | 1,869 | 1,885 | 6,098 | 5,989 |
General and Administrative Expense |  | (7,623) | (7,606) | (20,178) | (21,261) |
Interest Expense, Debt |  | (27,864) | (29,206) | (84,177) | (89,706) |
Extinguishment of Debt, Amount |  | (5,087) | (36,530) | (5,087) | (37,911) |
Rent Control Initiatives Expenses and Other |  | (751) | (521) | (2,063) | (2,377) |
Equity income from unconsolidated joint ventures |  | 1,237 | 439 | 3,768 | 1,624 |
Gain (Loss) on Condemnation | 900 | 929 | 0 | 929 | 0 |
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax |  | 0 | 982 | 0 | 7,215 |
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax |  | 0 | 40,586 | 0 | 41,544 |
Consolidated net income |  | 30,276 | 34,936 | 104,206 | 97,189 |
Total Assets |  | 3,451,148 | 3,397,130 | 3,451,148 | 3,397,130 | 3,392,309
Capital improvements |  |  |  | 41,645 | 48,571 |
Maximum [Member] |  |  |  |  |  |
Segment Reporting Disclosure [Line Items] |  |  |  |  |  |
Number of reportable segments |  |  |  | 2 |  |
Property Operations Segment [Member] |  |  |  |  |  |
Segment Reporting Disclosure [Line Items] |  |  |  |  |  |
Total property operations expenses |  | 91,715 | 86,579 | 261,188 | 249,148 |
Revenue for Reportable Segment |  | 184,046 | 174,657 | 540,859 | 512,587 |
Operating Costs and Expenses |  | 91,715 | 86,579 | 261,188 | 249,148 |
Operating Income Loss Before Depreciation And Other |  | 92,331 | 88,078 | 279,671 | 263,439 |
Interest Income |  | 696 | 856 | 2,266 | 2,589 |
Real Estate Depreciation Expense and Rental Homes |  | (25,010) | (24,730) | (74,815) | (76,704) |
Amortization of Intangible Assets for Continuing Operations |  | (1,075) | (485) | (3,791) | (803) |
Operating Income (Loss) |  | 66,942 | 63,719 | 203,331 | 188,521 |
Total Assets |  | 3,170,718 | 3,099,625 | 3,170,718 | 3,099,625 |
Capital improvements |  |  |  | 22,111 | 17,787 |
Home Sales And Rentals [Member] |  |  |  |  |  |
Segment Reporting Disclosure [Line Items] |  |  |  |  |  |
Total property operations expenses |  | 10,498 | 7,650 | 26,765 | 18,688 |
Revenue for Reportable Segment |  | 12,737 | 9,224 | 32,558 | 23,744 |
Operating Costs and Expenses |  | 10,498 | 7,650 | 26,765 | 18,688 |
Operating Income Loss Before Depreciation And Other |  | 2,239 | 1,574 | 5,793 | 5,056 |
Interest Income |  | 1,185 | 1,216 | 3,339 | 3,220 |
Real Estate Depreciation Expense and Rental Homes |  | (2,821) | (1,730) | (8,419) | (5,089) |
Amortization of Intangible Assets for Continuing Operations |  | 0 | 0 | 0 | 0 |
Operating Income (Loss) |  | 603 | 1,060 | 713 | 3,187 |
Total Assets |  | 280,430 | 297,505 | 280,430 | 297,505 |
Capital improvements |  |  |  | $ 19,534 | $ 30,784 |

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