Lease - Schedule of Reconciliation of Future Undiscounted Cash Flows to Operating Lease Liabilities After Adoption of 842 (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Operating Lease Liabilities, Payments Due [Abstract]
2020 (excluding the nine months ended September 30, 2020)	$ 1,553
2020	6,671
2021	5,422
2022	4,469
2023	4,100
Thereafter	6,833
Total future lease payments	29,048
Less: imputed interest	(3,650)
Total operating lease liabilities	25,398	$ 30,030
Less: current portion of lease liabilities	(6,073)	(7,871)
Long-term portion of operating lease liabilities	$ 19,325	$ 22,159