Consolidated Statements of Shareholders' Equity (USD $)
In Thousands, unless otherwise specified
Total
PreferredStock
Common Stock
Accumulated Other Comprehensive Income (Loss) Net of Tax
Retained Earnings
Beginning balance at Dec. 31, 2011 $ 167,280 $ 46,461 $ 74,219 $ 3,710 $ 42,890
Beginning balance (in shares) at Dec. 31, 2011   48 13,323    
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 25,327       25,327
Other comprehensive (loss), net of tax (165)     (165)  
Total comprehensive income 25,162        
Common stock issued and share-based compensation recorded under:          
Employee benefit plans, including tax benefit     691    
Employee benefit plans 2,712   2,712    
Restricted stock retired (shares)     (11)    
Restricted stock retired (40)   (40)    
Dividend reinvestment plan (in shares)     24    
Dividend reinvestment plan 197   197    
Accretion of discount on preferred stock   883     (883)
Preferred stock dividend (2,410)       (2,410)
Common stock dividend (in shares)     753    
Common stock dividend     6,991   (6,991)
Cash paid for fractional interest associated with stock dividend (13)       (13)
Ending balance at Dec. 31, 2012 192,888 47,344 84,079 3,545 57,920
Ending balance (in shares) at Dec. 31, 2012   48 14,780    
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 27,638       27,638
Other comprehensive (loss), net of tax (2,577)     (2,577)  
Total comprehensive income 25,061        
Common stock issued and share-based compensation recorded under:          
Employee benefit plans, including tax benefit     384    
Employee benefit plans 3,679   3,679    
Restricted stock retired (shares)     (33)    
Restricted stock retired (345)   (345)    
Dividend reinvestment plan (in shares)     29    
Dividend reinvestment plan 410   410    
Preferred stock dividend (1,607)       (1,607)
Common stock dividend (in shares)     433    
Common stock dividend     6,104   (6,104)
Cash paid for fractional interest associated with stock dividend (22)       (22)
Preferred stock redemption, including accretion of discount (in shares)   (48)      
Preferred stock redemption, including accretion of discount (48,200) (47,344)     (856)
Stock issuance (in shares)     5,750    
Stock issuance 65,419   65,419    
Common stock dividends paid (1,053)       (1,053)
Ending balance at Dec. 31, 2013 236,230 0 159,346 968 75,916
Ending balance (in shares) at Dec. 31, 2013   0 21,343    
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 30,036       30,036
Other comprehensive (loss), net of tax 1,846     1,846  
Total comprehensive income 31,882        
Common stock issued and share-based compensation recorded under:          
Employee benefit plans, including tax benefit     78    
Employee benefit plans 3,091   3,091    
Restricted stock retired (shares)     (117)    
Restricted stock retired (722)   (722)    
Dividend reinvestment plan (in shares)     61    
Dividend reinvestment plan 860   860    
Cash paid for fractional interest associated with stock dividend (5)       (5)
Common stock dividends paid (6,385)       (6,385)
Ending balance at Dec. 31, 2014 $ 264,951 $ 0 $ 162,575 $ 2,814 $ 99,562
Ending balance (in shares) at Dec. 31, 2014   0 21,365