Leases - Supplemental balance sheet information (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Assets
Operating lease assets	$ 21,600
Operating lease, right-of-use asset, statement of financial position	Other assets
Liabilities
Operating lease liabilities - current	$ 5,251
Operating lease liabilities - non-current	20,086
Total operating lease liabilities	$ 25,337
Operating lease, liability, current, statement of financial position	Accrued liabilities
Operating lease, liability, noncurrent, statement of financial position	Other liabilities