Restricted cash (Tables)

3 Months Ended

Mar. 31, 2018

Cash And Cash Equivalents [Abstract]

Summary of Reconciliation of Cash, Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the statement of cash flows for the three months ended March 31, 2018 and 2017.

	March 31, 2018		March 31, 2017		December 31, 2017
	(in thousands)
Cash and cash equivalents	$	154,031	$	69,786	$	87,680
Restricted cash		5,968		4,940		4,757
Restricted cash, included in other assets		—		—		347
Total cash, cash equivalents, and restricted cash	$	159,999	$	74,726	$	92,784