Income Taxes - Summary of Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Beginning Balance	$ 2,536	$ 2,819	$ 3,882
Additions for tax positions of the current year	150	145	119
Settlements of prior year positions	0	(282)	(16)
Lapse of statutes of limitation	(1,150)	(146)	(1,166)
Ending Balance	$ 1,536	$ 2,536	$ 2,819