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Long-Term Borrowings (Details Narrative) - USD ($)
$ in Thousands
Jul. 26, 2016
Aug. 05, 2014
Jun. 30, 2017
Dec. 31, 2016
Jun. 30, 2016
Proceeds from issuance of subordinated long-term debt $ 147,350 $ 68,800      
Subordinated Debt [Member]          
Face amount $ 150,000 $ 70,000      
Debt instrument, interest rate, stated percentage 5.00% 5.75%      
Payments of debt issuance costs $ 2,600 $ 1,200      
Subordinated Notes, 5.0% [Member]          
Debt instrument, interest rate, stated percentage     5.00% 5.00% 5.00%
Subordinated Notes, 5.75% [Member]          
Debt instrument, interest rate, stated percentage     5.75% 5.75% 5.75%