Condensed Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Other comprehensive income, net of tax
Unrealized holding gain, taxes	$ 22	$ (7)	$ 43	$ 37
Reclassification adjustments for losses on sales of securities, taxes	0	0	0	11
Reclassification adjustments for other-than-temporary impairment on securities, taxes	$ 11	$ 19	$ 53	$ 32