CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Comprehensive income:
Net income	$ 6,092	$ 6,060	$ 17,962	$ 17,518
Other comprehensive income:
Net unrealized gain on securities available-for-sale, net of tax	1,763	3,778	2,212	4,783
Reclassification adjustments for gains included in net income, net of tax	(173)	0	(1,560)	(31)
Foreign currency translation adjustments	10	0	(18)	0
Total comprehensive income	$ 7,692	$ 9,838	$ 18,596	$ 22,270