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Other Assets Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Sep. 26, 2008
Variable Interest Entity [Line Items]        
Income (Loss) from Equity Method Investments $ 790,000 $ 481,000 $ 774,000  
Investment in limited partnerships 3,963,000 3,215,000    
Investment in Community Development Entities 7,106,000 7,500,000    
Sole ownership of common securities issued by Trust II 315,000      
Junior subordinated notes 10,004,000 10,000,000    
Investment in Trust II 315,000 315,000    
Trust II        
Variable Interest Entity [Line Items]        
Sole ownership of common securities issued by Trust II       $ 315,000
Junior subordinated notes       $ 10,000,000
Fixed rate       10.50%
Aldine Capital Fund, LP        
Variable Interest Entity [Line Items]        
Investment in limited partnerships 883,000 1,000,000    
Aldine Capital Fund II, LP        
Variable Interest Entity [Line Items]        
Investment in limited partnerships $ 3,100,000 $ 2,200,000