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Repurchase of Subordinated Debentures (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Dec. 31, 2016
USD ($)
Feb. 26, 2016
USD ($)
Debt Instrument [Line Items]            
Subordinated debentures $ 10,310   $ 10,310   $ 10,310  
Gain on repurchase of subordinated debt 0 $ 0 0 $ 2,264    
Subordinated Debentures            
Debt Instrument [Line Items]            
Repurchase of subordinated debentures           $ 5,200
Subordinated debentures $ 10,300   $ 10,300      
Repurchase of subordinated debentures, price per dollar     0.5475      
Gain on repurchase of subordinated debt     $ 2,300      
Debt maturity date Dec. 19, 2036          
LIBOR | Subordinated Debentures            
Debt Instrument [Line Items]            
Debt instrument basis spread on variable rate     1.65%