CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net unrealized loss on securities available for sale, related tax effects (in dollars)	$ 10,000	$ 5,000
Cash dividend declared (in dollars per share)	$ 0.04
Cash dividend declared (in shares)	1,940,259
Repurchased stock related to buyback program (in shares)	18,312
Common stock held by ESOP allocated or committed to be allocated (in shares)	1,810	1,473
Restricted stock granted in connection with equity incentive plan (in shares)	22,000	12,606
Purchased stock related to vested restricted stock (in shares)	1,933
Forfeiture of restricted stock (in shares)		1,620
Reissuance of treasury stock (in shares)		7,027
Purchase of treasury stock (in shares)		986