Consolidated Statements of Comprehensive Loss (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
Statement of Other Comprehensive Income [Abstract]
Net loss	$ (4,712)	$ (13,930)	$ (33,709)	$ (106,611)
Other comprehensive income:
Unrealized gains arising from termination of supplemental executive retirement plans	371	0	371	0
Unrealized holdings gains arising during the period on available-for-sale securities	5,633	3,612	10,817	8,132
Tax effect	(2,225)	(1,427)	(4,245)	(3,212)
Unrealized holdings gains arising during the period on available-for-sale securities, net of tax	3,408	2,185	6,572	4,920
Reclassification adjustment for (gain) loss on available-for-sale securities included in net income	33	(7,393)	(1,923)	(7,308)
Tax effect	(13)	2,920	760	2,888
Reclassification adjustment for (gain) loss on available-for-sale securities included in net income, net of tax	20	(4,473)	(1,163)	(4,420)
Other comprehensive income, net of tax	3,799	(2,288)	5,780	500
Total comprehensive loss	$ (913)	$ (16,218)	$ (27,929)	$ (106,111)