Consolidated Statements Of Equity (USD $) In Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2009	$ 5	$ 1,053	$ 1,030,664	$ (580,628)	$ (15,296)	$ 435,798	$ 3,506	$ 439,304
Balance (in Shares) at Dec. 31, 2009	450,829	105,293,180
Net income (loss)				(11,724)		(11,724)		(11,724)
Change in fair value of interest rate swaps, net of tax					247	247		247
Comprehensive income (loss)						(11,477)		(11,477)
Stock issuances under employee plans, including income tax benefits, amount		19	5,061			5,080		5,080
Stock issuances under employee plans, including income tax benefits, shares (in Shares)		1,948,371
Exercise of Warrant for common stock, net of issuance costs		894	185,259			186,153		186,153
Exercise of Warrant for common stock, net of issuance costs (in Shares)		89,400,000
Amortization of stock-based compensation			6,584			6,584		6,584
Derecognition of conversion featurerelated to repurchase of Convertible Note			(276)			(276)		(276)
Change in noncontrolling interest attributable to lot option contracts							(3,506)	(3,506)
Balance at Dec. 31, 2010	5	1,966	1,227,292	(592,352)	(15,049)	621,862		621,862
Balance (in Shares) at Dec. 31, 2010	450,829	196,641,551
Net income (loss)				(16,417)		(16,417)		(16,417)	[1]
Change in fair value of interest rate swaps, net of tax					6,402	6,402		6,402
Comprehensive income (loss)						(10,015)		(10,015)
Stock issuances under employee plans, including income tax benefits, amount		19	4,453			4,472		4,472
Stock issuances under employee plans, including income tax benefits, shares (in Shares)		1,921,722
Issuance costs in connection with exercise of Warrant for common stock			(324)			(324)		(324)
Amortization of stock-based compensation			7,759			7,759		7,759
Balance at Dec. 31, 2011	5	1,985	1,239,180	(608,769)	(8,647)	623,754		623,754
Balance (in Shares) at Dec. 31, 2011	450,829	198,563,273
Net income (loss)				531,421		531,421		531,421	[1]
Change in fair value of interest rate swaps, net of tax					6,419	6,419		6,419
Comprehensive income (loss)						537,840		537,840
Stock issuances under employee plans, including income tax benefits, amount		52	15,172			15,224		15,224
Stock issuances under employee plans, including income tax benefits, shares (in Shares)		5,224,948
Issuance of common stock in connection with equity offering, net of issuance costs		134	71,713			71,847		71,847
Issuance of common stock in connection with equity offering, net of issuance costs (in Shares)		13,377,171
Common stock returned under share lending facility		(39)	39
Common stock returned under share lending facility (in Shares)		(3,919,904)
Amortization of stock-based compensation			7,151			7,151		7,151
Balance at Dec. 31, 2012	$ 5	$ 2,132	$ 1,333,255	$ (77,348)	$ (2,228)	$ 1,255,816		$ 1,255,816
Balance (in Shares) at Dec. 31, 2012	450,829	213,245,488

[1] Some amounts do not add across due to rounding differences in quarterly amounts and due to the impact of differences between the quarterly and annual weighted average share calculations.