CONDENSED CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Statement of Financial Position [Abstract]    
Available-for-sale securities, at amortized cost $ 1,397,458 $ 1,368,736
Held-to-maturity securities, at fair value 89,036 19,625
Other borrowings, including certain amounts at fair value $ 10,961 $ 11,292
Common Stock, par value (in dollars per share) $ 0.10 $ 0.10
Common Stock, shares authorized (in shares) 25,000,000 25,000,000
Common Stock, shares issued (in shares) 14,931,354 14,785,007
Treasury stock, shares (in shares) 111,436 105,449