Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

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)	March 31, 2019		March 31, 2018
Cash and cash equivalents	$	36,542	$	34,268
Restricted cash in prepaid expenses and other current assets		—		102
Restricted cash (short-term)		584		—
Restricted cash (long-term)		—		674
Total cash, cash equivalents and restricted cash shown in the condensed consolidated    statement of cash flows	$	37,126	$	35,044