CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash dividends:
Cash dividends, Common stock (in dollars per share)	$ 0.34	$ 0.24	$ 0.20
Exercise of stock options (in shares)	25,501	2,743	0
Restricted stock vesting (in shares)	15,425	21,455	12,932
Repurchase of restricted stock (in shares)	4,732	5,467	2,736