Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Operating leases:
Operating lease right-of-use assets	$ 78,867	$ 68,131
Accrued liabilities and other	16,362	15,850
Operating lease liabilities	64,200	53,919
Total operating lease liabilities	$ 80,562	$ 69,769