CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Other comprehensive income, before tax:
Change in pension liabilities	$ (18,157)	$ 298	$ (17,808)	$ 894
Change in unrealized loss on derivative instruments used in cash flow hedges	871	401	2,463	1,045
Unrealized gains on securities:
Unrealized holding gains arising during period	39,642	7,920	68,043	28,972
Reclassification adjustment for gains included in net income	6	0	(99)	0
Other comprehensive income, before tax:	22,362	8,619	52,599	30,911
Income tax expense related to other comprehensive income	(8,400)	(3,034)	(19,841)	(11,207)
Other comprehensive income, net of tax:	13,962	5,585	32,758	19,704
Net income	20,008	17,262	54,154	47,426
Comprehensive income	$ 33,970	$ 22,847	$ 86,912	$ 67,130