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Interest-Bearing Deposits (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Interest-Bearing Deposits (Textual)    
Interest-bearing time deposits in denominations of $250,000 or more $ 26,600 $ 27,900
Certificates of deposit obtained from brokers $ 13,200 10,700
Deposits maturity date Between 2019 and 2021.  
Time deposits certificate of deposit account registry service $ 72,600 $ 55,400
Cash FDIC insured 250  
Cash CDARS program insured 250  
State bank program $ 250