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Subordinated Debentures/Notes (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Apr. 20, 2012
USD ($)
purchaser
Dec. 23, 2009
purchaser
Subordinated notes $ 45,000 $ 45,000    
Number of purchasers | purchaser       38
Trust I        
Preferred securities issued 15,000      
Junior subordinated notes        
Junior subordinated debt purchased by Trust I $ 15,500      
Trust preferred securities        
Variable rate basis three-month LIBOR plus 148 basis points      
Basis spread on variable rate (percent) 1.48%      
Subordinated note        
Subordinated notes principal amount $ 35,250      
Portion of principal amount purchased by related parties $ 14,050      
Interest rate 10.00%      
Subordinated debt | 7% Subordinated notes due April 20, 2022        
Subordinated borrowing, number of purchasers | purchaser     56  
Aggregate principal amount     $ 30,000  
Interest rate 7.00%      
Purchase price as a percentage of principal amount     100.00%  
Repurchase amount as a percentage of principal     100.00%