Commitments and Contingencies - Financial Statement Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets
Operating lease right-of-use assets	$ 14,627	$ 17,076		$ 10,049
Finance lease	$ 392	$ 467
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property and equipment, net	Property and equipment, net
Total leased assets	$ 15,019	$ 17,543
Liabilities
Operating lease liabilities	2,419	2,260		2,430
Operating lease liabilities , non-current	13,483	15,950		$ 7,759
Total Operating lease liabilities	15,902	18,210
Finance lease liabilities, current	$ 554	$ 370
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued liabilities	Accrued liabilities
Finance lease liabilities, non-current	$ 730	$ 241
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other long-term liabilities	Other long-term liabilities
Present value of lease liabilities	$ 1,284	$ 611
Finance lease cost	484	431	$ 704
Finance lease cost	59	63	88
Operating lease cost	3,542	3,275	2,892
Operating cash flow	56	63	88
Financing cash flow	462	537	649
Operating cash flow	$ 3,092	$ 2,139	$ 2,820