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	$ 9,347	$ 8,447	$ 26,792	$ 22,401
Change in securities available for sale:
Unrealized holding gain (loss) on securities available for sale arising during the period	(251)	4,857	818	8,651
Reclassification adjustment for losses included in net income	380	1	377	167
Reclassification adjustment for other than temporary impairment	67	33	1,026	154
Net securities gain activity during the period	196	4,891	2,221	8,972
Tax effect	(76)	(1,889)	(880)	(3,462)
Net of tax amount	120	3,002	1,341	5,510
Defined benefit pension plans:
Net gain(loss) on defined benefit pension plans	0	0	110	(233)
Amortization of net actuarial loss	55	62	164	132
Net gain /(loss) activity during the period	55	62	274	(101)
Tax effect	(22)	(26)	(110)	41
Net of tax amount	33	36	164	(60)
Total other comprehensive income, net of tax	153	3,038	1,505	5,450
Comprehensive income	$ 9,500	$ 11,485	$ 28,297	$ 27,851