Consolidated Statements of Comprehensive Loss (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Statement of Other Comprehensive Income [Abstract]
Net loss	$ (18,138)	$ (48,974)	$ (28,997)	$ (92,681)
Other comprehensive income:
Unrealized holdings gains arising during the period on available-for-sale securities	4,026	4,785	5,184	4,524
Tax effect	(1,563)	(1,890)	(2,020)	(1,787)
Unrealized holdings gains arising during the period on available-for-sale securities, net of tax	2,463	2,895	3,164	2,737
Reclassification adjustment for (gain) loss on available-for-sale securities included in net income	(2,002)	98	(1,956)	84
Tax effect	790	(39)	773	(33)
Reclassification adjustment for (gain) loss on available-for-sale securities included in net income, net of tax	(1,212)	59	(1,183)	51
Other comprehensive income, net of tax	1,251	2,954	1,981	2,788
Total comprehensive loss	$ (16,887)	$ (46,020)	$ (27,016)	$ (89,893)