Restricted Cash (Tables)

12 Months Ended

Dec. 31, 2011

Restricted Cash [Abstract]

Schedule Of Restricted Cash

	As of December 31, 2011		As of December 31, 2010		Included on Balance Sheet
	(in thousands)
Securitization escrow accounts	$	21,378	$	28,583	Restricted cash – current asset
Payment and performance bonds		888		873	Restricted cash – current asset
Surety bonds and workers compensation		11,495		11,392	Other assets – noncurrent
Total restricted cash	$	33,761	$	40,848