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Troubled Debt Restructurings (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2017
USD ($)
Investment
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification  
Renewals deemed a concession 1
Reduced or deferred payments
Converted to interest only
Maturity date extensions
Total number of loans 1
Pre-modification outstanding recorded investment | $ $ 149
Post-modification outstanding recorded investment | $ $ 149
Commercial [Member] | Business [Member]  
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification  
Renewals deemed a concession 1
Reduced or deferred payments
Converted to interest only
Maturity date extensions
Total number of loans 1
Pre-modification outstanding recorded investment | $ $ 149
Post-modification outstanding recorded investment | $ $ 149