Leases - Leases Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets
Operating lease assets	$ 30,108	$ 20,231
Finance lease asset	0	20,874
Total lease assets	$ 30,108	$ 41,105
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets	Other assets
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property and equipment, net	Property and equipment, net
Lease liabilities, current
Operating lease liabilities, current portion	$ 5,904	$ 3,760
Finance lease liability, current portion	$ 0	$ 3,761
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accounts payable and accrued liabilities	Accounts payable and accrued liabilities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Lease liabilities, long term
Operating lease liabilities, long term	$ 37,261	$ 28,579
Finance lease liability, long term	$ 0	$ 20,235
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Operating lease liabilities, long term	Operating lease liabilities, long term
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Total lease liabilities	$ 43,165	$ 56,335