Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Operating leases:
Operating lease ROU assets	$ 49,376	$ 57,427
Current operating lease liabilities	10,936	12,554
Noncurrent operating lease liabilities	21,695	27,545
Total operating lease liabilities	32,631	40,099
Finance leases:
Finance lease ROU assets	2,509	3,396
Accumulated amortization	(2,089)	(1,924)
Finance lease ROU assets, net	420	1,472
Current finance lease liabilities	370	903
Non-current finance lease liabilities	11	138
Total finance lease liabilities	$ 381	$ 1,041
Weighted average remaining lease term (in years):
Operating leases	4 years	4 years 4 months 24 days
Finance leases	7 months 6 days	1 year 3 months 18 days
Weighted average discount rate:
Operating leases	3.90%	3.80%
Finance leases	3.00%	3.00%