Fair Value (Details 2) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Financial Assets:    
Securities - held to maturity $ 141,654 $ 142,832
Financial Liabilities:    
Time deposits 826,933 870,788
Fed funds purchased and securities sold under agreements to repurchase 50,360 69,062
Other borrowings 952,035 884,815
Trust preferred debentures 16,605 37,681
Level 1    
Financial Assets:    
Cash and cash equivalents 78,175 63,954
Securities - held to maturity 0 0
FHLB and other stock 0 0
Accrued interest receivable 0 0
Loans/leases, net [1] 0 0
Financial Liabilities:    
Time deposits 0 0
Other deposits 0 0
Fed funds purchased and securities sold under agreements to repurchase 0 0
Other borrowings 0 0
Trust preferred debentures 0 0
Accrued interest payable 0 0
Level 2    
Financial Assets:    
Cash and cash equivalents 0 0
Securities - held to maturity 141,654 142,832
FHLB and other stock 45,714 43,133
Accrued interest receivable 18,376 17,390
Loans/leases, net [1] 3,037 7,296
Financial Liabilities:    
Time deposits 825,283 867,921
Other deposits 3,923,789 3,754,351
Fed funds purchased and securities sold under agreements to repurchase 50,360 69,109
Other borrowings 951,600 884,842
Trust preferred debentures 22,111 43,321
Accrued interest payable 1,867 1,902
Level 3    
Financial Assets:    
Cash and cash equivalents 0 0
Securities - held to maturity 0 0
FHLB and other stock 0 0
Accrued interest receivable 0 0
Loans/leases, net [1] 4,327,169 4,180,119
Financial Liabilities:    
Time deposits 0 0
Other deposits 0 0
Fed funds purchased and securities sold under agreements to repurchase 0 0
Other borrowings 0 0
Trust preferred debentures 0 0
Accrued interest payable 0 0
Carrying Amount    
Financial Assets:    
Cash and cash equivalents 78,175 63,954
Securities - held to maturity 139,994 142,119
FHLB and other stock 45,714 43,133
Accrued interest receivable 18,376 17,390
Loans/leases, net [1] 4,381,439 4,222,278
Financial Liabilities:    
Time deposits 826,933 870,788
Other deposits 3,923,789 3,754,351
Fed funds purchased and securities sold under agreements to repurchase 50,360 69,062
Other borrowings 952,036 884,815
Trust preferred debentures 16,605 37,681
Accrued interest payable 1,867 1,902
Fair Value    
Financial Assets:    
Cash and cash equivalents 78,175 63,954
Securities - held to maturity 141,654 142,832
FHLB and other stock 45,714 43,133
Accrued interest receivable 18,376 17,390
Loans/leases, net [1] 4,330,206 4,187,415
Financial Liabilities:    
Time deposits 825,283 867,921
Other deposits 3,923,789 3,754,351
Fed funds purchased and securities sold under agreements to repurchase 50,360 69,109
Other borrowings 951,600 884,842
Trust preferred debentures 22,111 43,321
Accrued interest payable $ 1,867 $ 1,902
[1] Lease receivables, although excluded from the scope of ASC Topic 825, are included in the estimated fair value amounts at their carrying value.