CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [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
Unrealized gain arising during the period, net of tax	$ 683	$ 1,107	$ 1,511	$ 2,893
Reclassification adjustment for gains included in net income, net of tax	85	188	481	546
Net gain arising during the period, net of tax	$ (10)	$ 43	$ (20)	$ 32