Investments in Unconsolidated Affiliates (Tables)

6 Months Ended

Jun. 30, 2012

Investments in Unconsolidated Affiliates [Abstract]

Combined financial information of the unconsolidated affiliated companies

	As of June 30,
	2012
Assets:
Current assets	$	40,349
Noncurrent assets		163,743
Total assets	$	204,092
Liabilties:
Current liabilities	$	40,792
Noncurrent liabilities		86,424
Total liabilities	$	127,216

	Three Months Ended
	June 30, 2012			June 30, 2011
Results of operations:
Revenue	$	31,403		$	45,934
Net loss	$	(5,328	)	$	6
	Six Months Ended
	June 30, 2012			June 30, 2011
Results of operations:
Revenue	$	54,187		$	68,942
Net loss	$	(13,697	)	$	(7,735	)