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Business Segments (Details) (USD $)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
segment
Sep. 30, 2012
Dec. 31, 2012
Segment Reporting Information [Line Items]          
Net interest income $ 3,967,000 $ 4,027,000 $ 11,845,000 $ 11,729,000  
Provision for loan losses   601,000 290,000 1,776,000 2,289,000
Net interest income after provision for loan losses 3,967,000 3,426,000 11,555,000 9,953,000  
Noninterest income 769,000 1,052,000 2,638,000 2,566,000  
Noninterest expense 3,568,000 3,783,000 10,770,000 10,626,000  
Income before income taxes 1,168,000 695,000 3,423,000 1,893,000  
Income tax expense 355,000 156,000 1,025,000 508,000  
Net income 813,000 539,000 2,398,000 1,385,000  
Total assets 435,372,000 426,077,000 435,372,000 426,077,000 441,381,000
Number of reportable segments     2    
Community Banking [Member]
          
Segment Reporting Information [Line Items]          
Net interest income 3,967,000 4,027,000 11,845,000 11,729,000  
Provision for loan losses   601,000 290,000 1,776,000  
Net interest income after provision for loan losses 3,967,000 3,426,000 11,555,000 9,953,000  
Noninterest income 474,000 650,000 1,684,000 1,649,000  
Noninterest expense 3,323,000 3,491,000 10,006,000 9,898,000  
Income before income taxes 1,118,000 585,000 3,233,000 1,704,000  
Income tax expense 337,000 119,000 960,000 444,000  
Net income 781,000 466,000 2,273,000 1,260,000  
Total assets 434,493,000 421,830,000 434,493,000 421,830,000  
Mortgage [Member]
          
Segment Reporting Information [Line Items]          
Noninterest income 295,000 402,000 954,000 917,000  
Noninterest expense 245,000 292,000 764,000 728,000  
Income before income taxes 50,000 110,000 190,000 189,000  
Income tax expense 18,000 37,000 65,000 64,000  
Net income 32,000 73,000 125,000 125,000  
Total assets $ 879,000 $ 4,247,000 $ 879,000 $ 4,247,000