Summary of Significant Accounting Policies - 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
Accounting Policies [Abstract]
Cash and cash equivalents	$ 59,730	$ 89,893	$ 30,200
Restricted cash	278		279
Long-term restricted cash	1,379		0
Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows	$ 61,387	$ 91,551	$ 30,479	$ 37,682