Cash, cash equivalents and restricted cash (Tables)

6 Months Ended

Jun. 30, 2018

Cash, cash equivalents and restricted cash

Schedule of reconciliation of cash, cash equivalents and restricted cash

	June 30,
	2018			2017
	(in thousands)
Cash and cash equivalents	$	147,297	$	108,558
Short-term and long-term restricted cash		7,645		6,793
Total cash, cash equivalents and restricted cash	$	154,942	$	115,351