Stockholders' Equity (Details 4) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Stockholders Equity Details 4
Income (loss) from continuing operations	$ 282,213		$ 253,209		$ (185,441)
Net (income) loss attributable to noncontrolling interests	(98,780)		5,823
Income (loss) from continuing operations allocable to common stock	$ 183,433		$ 259,032		$ (185,441)
Weighted average shares outstanding, basic	23,459,432		22,660,429		22,371,264
Warrants and options outstanding for the purchase of common stock	1,293,512	[1]	1,289,996	[1]
Weighted average shares outstanding, diluted	24,752,944		23,950,425		22,371,264
Basic CEPS	$ 7.82		$ 11.43		$ (8.29)
Diluted EPS	$ 7.41		$ 10.82		$ (8.29)

[1] As of December 31, 2010, Diluted EPS excludes 3.5 million warrants and 12,000 options which were not dilutive for the period. On November 8, 2012, all of our outstanding warrants were exercised. We issued 1,690,466 shares of our class A common stock pursuant to the terms of the warrants, and no longer have any warrants outstanding as of December 31, 2012.