Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net income	$ 8,766	$ 8,273	$ 14,951	$ 12,385
Other comprehensive income, net of tax:
Unrealized gain on investment securities arising during the period, net of tax	1,482	4,101	3,278	5,058
Less reclassification adjustment for realized gain on sale of securities included in net income, net of tax	(86)	(324)	(740)	(435)
Reclassification of cash flow hedge, net of tax	0	(28)	0	(56)
Total other comprehensive income	1,396	3,749	2,538	4,567
Total comprehensive income	$ 10,162	$ 12,022	$ 17,489	$ 16,952