Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Operating Leases
Other non-current assets	$ 13,088	$ 14,144
Accrued liabilities	3,825	3,680
Other long-term liabilities	9,404	10,565
Total operating lease liabilities	$ 13,229	$ 14,245
Operating leases, weighted average remaining lease term	5 years 6 months 3 days	5 years 9 months 29 days
Operating leases, weighted average remaining discount rate	2.88%	3.04%
Other non-current assets	Other non-current assets	Other non-current assets
Accrued liabilities	Accrued liabilities	Accrued liabilities
Other long-term liabilities	Other long-term liabilities	Other long-term liabilities