Condensed Consolidated Statements Of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net income	$ 5,725	$ 7,141
Other comprehensive income (loss), before tax: Available-for-sale securities:
Unrealized gains (losses) on securities available for sale with other-than-temporary impairment	482	(197)
Unrealized gains (losses) on securities available for sale without other-than-temporary impairment	5,706	(1,121)
Less: reclassification adjustment for gains realized in net income	(45)	(117)
Less: reclassification adjustment for credit related other-than-temporary impairments recognized in net income	264
Unrealized gains (losses) on available-for-sale securities	6,407	(1,435)
Employee benefit plans:
Net actuarial gain (loss) on pension and other postretirement benefit plans	29	(300)
Net prior service cost attributed to plan amendments		(94)
Less: reclassification adjustment for amortization of prior service cost and net actuarial loss included in net periodic benefit cost	65	81
Unrealized gains (losses) on employee benefit plans	94	(313)
Other comprehensive income (loss), before tax	6,501	(1,748)
Income tax (expense) benefit	(2,448)	653
Other comprehensive income (loss), net of tax	4,053	(1,095)
Total comprehensive income	$ 9,778	$ 6,046