Consolidated Statements of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Statement of Other Comprehensive Income [Abstract]
Net loss	$ (40,005)	$ (137,314)	$ (131,827)
Other comprehensive income:
Unrealized gains arising from termination of supplemental executive retirement plans	440	0	0
Tax effect	(173)	0	0
Unrealized gains arising from termination of supplemental executive retirement plans, net of tax	267	0	0
Unrealized holdings gains arising during the period on available-for-sale securities	9,684	8,634	1,563
Tax effect	(3,824)	(3,409)	(617)
Unrealized holdings gains arising during the period on available-for-sale securities, net of tax	5,860	5,225	946
Unrealized holding gains arising during the period on reclassifying held-to-maturity securites to available-for-sale securities	0	0	3,478
Tax effect	0	0	(1,373)
Unrealized holding gains arising during the period on reclassifying held-to-maturity securites to available-for-sale securities	0	0	2,105
Reclassification adjustment for gain on available-for-sale securities included in net income	(4,121)	(7,296)	(10,644)
Tax effect	1,627	2,881	4,203
Reclassification adjustment for gain on available-for-sale securities included in net income, net of tax	(2,494)	(4,415)	(6,441)
Interest rate swap	0	0	411
Tax effect	0	0	(162)
Interest rate swap, net of tax	0	0	249
Change in pension and post retirement liability	22	(1,798)	922
Tax effect	(9)	710	(364)
Change in pension and post-retirement liability, net of tax	13	(1,088)	558
Other comprehensive income/(loss), net of tax	3,646	(278)	(2,583)
Comprehensive loss	$ (36,359)	$ (137,592)	$ (134,410)