Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net loss	$ (1,125,019)	$ (3,575,568)
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on securities arising during the period	85,294	(193,166)
Reclassification of realized amount	(542,942)
Other comprehensive income (loss)	(457,648)	(193,166)
Income taxes related to other comprehensive income (loss)
Other comprehensive income (loss), net of income taxes	(457,648)	(193,166)
Total comprehensive loss	$ (1,582,667)	$ (3,768,734)