Summary of Significant Accounting Policies - Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Cash and cash equivalents	$ 72,606	$ 89,893	$ 32,173
Restricted cash	279		279
Long-term restricted cash	1,379		0
Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows	$ 74,264	$ 91,551	$ 32,452	$ 37,682