Leases - Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Leases [Abstract]
Operating Leases, Accrued and other current liabilities	$ 2,515	$ 2,128
Operating Leases, Operating lease liabilities, noncurrent	14,150	14,522
Total	$ 16,665	$ 16,650
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued and other current liabilities	Accrued and other current liabilities