CARES Act Payroll Tax Deferral - Summary of Other Long-term Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Deferred employer payroll tax obligation	$ 870	$ 870
Current portion of deferred payroll tax obligation	(436)	(436)
Other long-term liabilities	$ 434	$ 434