Cash and Cash Equivalents (Tables)

9 Months Ended

Sep. 30, 2017

Cash and Cash Equivalents [Abstract]

Cash and cash equivalents

The carrying values of the Company's cash and cash equivalents are as follows:

	As of September 30,		As of December 31,
	2017		2016
	(in thousands)
	(unaudited)
Cash	$	37,548	$	85,047
Cash equivalents	8,832		9,013
Restricted cash - letters of credit	4,495		4,253
Total cash and cash equivalents	$	50,875	$	98,313