CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for loan losses (in dollars)	$ 19,946	$ 18,839
Common stock, stated value per share (usd per share)	$ 0.125	$ 0.125
Common stock, Authorized shares (shares)	40,000,000	40,000,000
Common stock, Issued shares (shares)	14,557,815	14,538,132
Common stock, Outstanding shares (shares)	12,740,018	12,942,175
Treasury stock (shares)	1,817,797	1,595,957