CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Unrealized holding gains on securities:
Unrealized holding gains arising during the period, tax	$ 175	$ 685	$ 566	$ 711
Reclassification adjustment due to gains realized on sales of securities, tax	$ 0	$ 182	$ 0	$ 182