Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 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)	June 30, 2019		June 30, 2018
Cash and cash equivalents	$	36,917	$	22,460
Restricted cash in prepaid expenses and other current assets		—		192
Restricted cash (short-term)		584		—
Restricted cash (long-term)		—		584
Total cash, cash equivalents and restricted cash shown in the condensed consolidated    statement of cash flows	$	37,501	$	23,236