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Troubled Debt Restructurings (Details Textual)
3 Months Ended
Mar. 31, 2017
USD ($)
Investment
Dec. 31, 2016
USD ($)
Investment
Troubled Debt Restructurings (Textual)    
Total number of loans classified under troubled debt restructurings (TDRs) | Investment 18 17
Total sum of loans classified as troubled debt restructurings (TDRs) | $ $ 6,800,000 $ 6,700,000
Number of months previous loan payment defaulted 12 months  
Modified investment amount | $ $ 187,000  
Number of loans | Investment 1