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Other Real Estate Owned (OREO) - Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
loan
Dec. 31, 2015
USD ($)
loan
Dec. 31, 2014
USD ($)
Banking and Thrift [Abstract]      
Repossessed assets $ 5,073 $ 3,345 $ 4,051
Expenses applicable to OREO $ 363 $ 284 $ 256
Number of loans secured by residential real estate | loan 0 1  
Amount of loan secured by residential real estate   $ 533