Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net income	$ 16,176	$ 6,365	$ 30,818	$ 14,257
Available-for-sale securities
Before tax	1,164	(1,409)	(852)	1,490
Tax effect	(945)	550	(158)	(549)
Net of tax	219	(859)	(1,010)	941
Before tax	216	151	216	(792)
Tax effect	(88)	(62)	(88)	324
Net of tax	128	89	128	(468)
Net unrealized holding gains (losses)	91	(948)	(1,138)	1,409
Unrecognized net pension costs
Before tax	10,997		10,997
Tax effect	(4,498)		(4,498)
Net of tax	6,499		6,499
Total other comprehensive income (loss)	6,590	(948)	5,361	1,409
Total comprehensive income	$ 22,766	$ 5,417	$ 36,179	$ 15,666