Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2018

Accounting Policies [Abstract]

Schedule 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 statement of financial position that sum to the total of the same such amounts shown in the statement of cash flows:

(in thousands)	September 30, 2018		September 30, 2017
Cash and cash equivalents	$	49,794	$	107,245
Restricted cash (short-term)		584		102
Restricted cash (long-term)		—		60,682
Total cash, cash equivalents and restricted cash shown in the condensed consolidated    statement of cash flows	$	50,378	$	168,029