Restricted Cash (Tables)

3 Months Ended

Mar. 31, 2019

Restricted Cash [Abstract]

Schedule of Cash, Cash Equivalents and Restricted Cash

	As of		As of
	March 31, 2019		December 31, 2018		Included on Balance Sheet
		(in thousands)
Cash and cash equivalents	$	117,613	$	143,444
Securitization escrow accounts		23,682		32,261	Restricted cash - current asset
Payment and performance bonds		201		203	Restricted cash - current asset
Surety bonds and workers compensation		2,375		2,392	Other assets - noncurrent
Total cash, cash equivalents, and restricted cash	$	143,871	$	178,300