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	$ 8,607	$ 8,563	$ 26,475	$ 30,928
Other comprehensive (loss) income:
Unrealized holding (losses) gains on available for sale securities during the period	15,469	20,722	11,446	47,002
Noncredit portion of other than temporary losses on the AFS securities	0	0	160	0
Reclassification adjustment for gain on sale of available for sale securities included in net income	(4,302)	(3,609)	(13,571)	(9,080)
Reclassification of other-than-temporary impairment charges on available for sale securities included in net income	0	0	181	0
Amortization of net actuarial loss, included in net periodic benefit cost	505	366	1,516	1,099
Amortization of prior service credit included in net periodic benefit cost	(10)	(11)	(32)	(33)
Other comprehensive (loss) income	11,662	17,468	(300)	38,988
Income tax benefit (expense) related to other items of comprehensive income	(4,081)	(6,114)	106	(13,646)
Other comprehensive income (loss), net of taxes	7,581	11,354	(194)	25,342
Comprehensive income	$ 16,188	$ 19,917	$ 26,281	$ 56,270