Fair Value (Details 2) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Fair value of financial assets    
Securities - held to maturity $ 48,017 $ 19,625
FHLB stock 14,838 25,041
Financial Liabilities:    
Time deposits 930,796 865,702
Fed funds purchased and securities sold under agreements to repurchase 128,368 167,724
Other borrowings 166,509 331,531
Trust preferred debentures 37,298 37,169
Carrying Amount [Member]
   
Fair value of financial assets    
Cash and cash equivalaents 85,117 82,884
Securities - held to maturity 47,608 18,980
FHLB stock 14,838 25,041
Accrued interest receivable 16,494 16,586
Loans/leases, net 3,229,683 [1] 3,166,314 [1]
Financial Liabilities:    
Time deposits 930,796 865,702
Other deposits 3,282,064 3,081,514
Fed funds purchased and securities sold under agreements to repurchase 128,368 167,724
Other borrowings 155,477 320,239
Accrued interest payable 1,827 2,121
Trust preferred debentures 37,298 37,169
Fair Value [Member]
   
Fair value of financial assets    
Cash and cash equivalaents 85,117 82,884
Securities - held to maturity 48,017 19,625
FHLB stock 14,838 25,041
Accrued interest receivable 16,494 16,586
Loans/leases, net 3,248,727 [1] 3,201,837 [1]
Financial Liabilities:    
Time deposits 932,938 870,857
Other deposits 3,282,064 3,081,514
Fed funds purchased and securities sold under agreements to repurchase 132,383 173,425
Other borrowings 155,739 326,193
Accrued interest payable 1,827 2,121
Trust preferred debentures 43,904 41,673
Level 1 [Member]
   
Fair value of financial assets    
Cash and cash equivalaents 85,117 82,884
Securities - held to maturity 0 0
FHLB stock 0 0
Accrued interest receivable 0 0
Loans/leases, net 0 [1] 0 [1]
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
Accrued interest payable 0 0
Trust preferred debentures 0 0
Level 2 [Member]
   
Fair value of financial assets    
Cash and cash equivalaents 0 0
Securities - held to maturity 48,017 19,625
FHLB stock 14,838 25,041
Accrued interest receivable 16,494 16,586
Loans/leases, net 9,226 [1] 6,846 [1]
Financial Liabilities:    
Time deposits 932,938 870,857
Other deposits 3,282,064 3,081,514
Fed funds purchased and securities sold under agreements to repurchase 132,383 173,425
Other borrowings 155,739 326,193
Accrued interest payable 1,827 2,121
Trust preferred debentures 43,904 41,673
Level 3 [Member]
   
Fair value of financial assets    
Cash and cash equivalaents 0 0
Securities - held to maturity 0 0
FHLB stock 0 0
Accrued interest receivable 0 0
Loans/leases, net 3,239,501 [1] 3,194,991 [1]
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
Accrued interest payable 0 0
Trust preferred debentures $ 0 $ 0
[1] Lease receivables, although excluded from the scope of ASC Topic 825, are included in the estimated fair value amounts at their carrying value.