Cash, Cash Equivalents, and Restricted Cash - Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Cash And Cash Equivalents [Abstract]
Cash and cash equivalents	$ 9,803	$ 21,465	$ 14,105
Restricted cash	6,735	6,087	1,542
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$ 16,538	$ 27,552	$ 15,647	$ 16,677