Leases - Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets and liabilities
Operating lease assets	$ 39,690	$ 43,260
Operating lease liabilities, current	503	$ 9,867
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]		Operating lease liabilities, current	Operating lease liabilities, current
Operating lease liabilities	52,681	$ 47,220
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]		Operating lease liabilities	Operating lease liabilities
Total operating lease liabilities	$ 53,184	$ 57,087