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Intangible Assets (Detail Textuals) - Mortgage servicing rights (MSRs) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]          
Mortgage loans serviced for others $ 289.8 $ 304.7 $ 289.8 $ 304.7 $ 294.4
Mortgage loan servicing fees reported as non-interest income $ 211,000 $ 211,000 $ 420,000 $ 421,000