CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Comprehensive income:
Net income	$ 6,073	$ 5,962	$ 12,105	$ 11,870
Other comprehensive income:
Net unrealized (loss) gain on securities available-for-sale, net of tax	(4,962)	1,352	(5,777)	449
Reclassification adjustments for gains included in net income, net of tax	(1,094)	(759)	(2,039)	(1,387)
Foreign currency translation adjustments	25	(31)	(23)	(28)
Total comprehensive income	$ 42	$ 6,524	$ 4,266	$ 10,904