CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Other comprehensive income (loss), tax:
Unrealized holding gains on securities available for sale, tax expense	$ 326	$ 607
Unrealized holding loss on financial derivative, tax expenses (benefit)	2	(36)
Retirement plan net losses recognized in plan expenses, tax expenses (benefit)	$ 158	$ (1,053)
ESOP shares earned (in shares)	11,645	7,105
Common stock dividends declared, per share (in dollars per share)	$ 0.12	$ 0.12