CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income	$ 8,900	$ 7,582	$ 26,051	$ 21,947
Securities available for sale:
Unrealized (losses) gains on securities arising during the period	(218)	(310)	(676)	3,315
Less: reclassification adjustment for net gains on securities realized in net income	0	0	138	92
Net unrealized (losses) gains on securities available for sale, net of tax	(218)	(310)	(814)	3,223
Reclassification adjustment for change in non-credit portion of OTTI realized losses transferred to net income	0	101	80	88
Cash flow hedges:
Unrealized losses on cash flow hedges arising during the period	(127)	(498)	(331)	(917)
Less: reclassification adjustment for amount of gains on cash flow hedges realized in net income	113	123	336	368
Net unrealized (losses) gains on cash flow hedges, net of tax	(14)	(375)	5	(549)
Defined benefit plan obligation adjustment	171	60	527	181
Total other comprehensive (loss) income, net of tax	(61)	(524)	(202)	2,943
Total comprehensive income	$ 8,839	$ 7,058	$ 25,849	$ 24,890