Leases - Supplemental balance sheet information (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Assets
Operating lease assets	$ 17,661	$ 23,828
Operating lease, right-of-use asset, statement of financial position	Other assets	Other assets
Liabilities
Operating lease liabilities - current	$ 5,766	$ 6,539
Operating lease liabilities - non-current	16,320	21,895
Total operating lease liabilities	$ 22,086	$ 28,434
Operating lease, liability, current, statement of financial position	Accrued liabilities	Accrued liabilities
Operating lease, liability, noncurrent, statement of financial position	Other liabilities	Other liabilities