Leases - Impact of the Adoption of Topic 842 (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property and equipment, net		$ 2,075	$ 4,011	$ 3,072
Current liabilities	$ 52,995	53,993	21,751	21,539
Other long-term liabilities	$ 213	$ 580	6,422	$ 5,600
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property and equipment, net			939
Current liabilities			212
Other long-term liabilities			$ 822