Commitments and Contingencies Outstanding Operating Lease Liabilities (Details) - USD ($)		9 Months Ended
		Sep. 30, 2020	Dec. 31, 2019
Future minimum annual lease and service payments
Total lease liability		$ 84,044,000	$ 97,581,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability		300,000
Equipment Leases
Future minimum annual lease and service payments
2020		90,000
2021		223,000
2022		91,000
2023		3,000
2024		0
Thereafter		0
Future minimum annual lease and service payments		407,000
Less discount		25,000
Less short-term leases		0
Total lease liability		382,000
Facility Leases
Future minimum annual lease and service payments
2020	[1],[2]	4,302,000
2021	[1],[2]	24,723,000
2022	[1],[2]	21,484,000
2023	[1],[2]	18,095,000
2024	[1],[2]	14,784,000
Thereafter	[1],[2]	10,166,000
Future minimum annual lease and service payments	[1],[2]	93,554,000
Less discount	[1],[2]	9,816,000
Less short-term leases		76,000
Total lease liability	[1],[2]	$ 83,662,000

[1] During the nine months ended September 30, 2020, the Company recognized $0.3 operating right-of-use assets and leases liabilities increases for facility leases.

[2] The Company has entered into various agreements to sublease certain of its premises.