Leases - Lease Balances (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Right-of-use assets	$ 45,924	$ 50,160
Long-term lease liabilities	39,730	43,827
Present value of lease liabilities	$ 49,690	$ 53,852
Operating leases	7 years 10 months 24 days	8 years 4 months 24 days
Weighted average discount rate	5.00%	4.90%
Right-of-use assets
Lessee, Lease, Description [Line Items]
Right-of-use assets	$ 45,924	$ 50,160
Other accrued liabilities
Lessee, Lease, Description [Line Items]
Short-term lease liability	9,960	10,025
Long-term lease liability
Lessee, Lease, Description [Line Items]
Long-term lease liabilities	$ 39,730	$ 43,827