Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Income Taxes [Abstract]
Income tax expense	$ 8,056,000	$ 0	$ 30,887,000	$ (288,842,000)
Effective tax rate	0.00%		0.00%
Deferred tax asset, net	282,561,000		282,561,000		292,082,000
Deferred tax asset net operating loss and tax credit carryforwards	$ 245,300,000		$ 245,300,000		$ 274,000,000