Earnings from Equity Investments (Tables)

12 Months Ended

Dec. 31, 2011

Earnings from Equity Investments

Schedule of combined financial summary information

	Years Ended December 31,
	2011		2010		2009
Revenues	$	907,744	$	598,758	$	557,008
Revenues less cost of revenue	$	461,715	$	338,327	$	310,610
Net income	$	124,523	$	161,853	$	195,033

	As of December 31,
	2011		2010
Current assets	$	598,004	$	934,368
Noncurrent assets	$	1,377,045	$	1,498,435
Current liabilities	$	455,082	$	738,060
Noncurrent liabilities	$	93,363	$	1,251,155