Leases - Supplemental Cash Flow and Other Information Related to Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash paid for the amounts included in the measurements of lease liabilities:
Operating cash outflows from operating leases	$ 15,943	$ 18,325
Operating cash outflows from finance leases	19	48
Financing cash outflow from finance leases	919	1,082
ROU assets obtained in exchange for lease liabilities incurred:
Operating leases	$ 6,339	$ 3,956