Leases (Supplemental Balance Sheet Information) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Operating leases:
Operating lease right-of-use assets	$ 147,959	$ 149,578
Current operating lease liability	22,485	18,294
Non-current operating lease liability	159,200	156,963
Total operating lease liabilities	181,685	175,257
Finance leases:
Finance lease at cost	127	127
Accumulated amortization	(38)	(19)
Finance lease net	89	108
Current portion of notes payable and long-term debt	59	86
Notes payable, long-term debt and other obligations, less current portion	110	108
Total finance lease liabilities	$ 169	$ 194
Weighted average remaining lease term:
Operating leases	8 years 1 month 2 days	8 years 5 months 15 days
Finance leases	2 years 10 months 24 days	3 years 3 days
Weighted average discount rate:
Operating leases	9.28%	10.75%
Finance leases	7.75%	8.61%
Financing lease equipment
Finance leases:
Finance lease at cost	$ 748	$ 762
Accumulated amortization	(675)	(674)
Finance lease net	$ 73	$ 88