Leases Operating and Finance Lease Liability (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Operating Leases
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 3,050,000
Lessee, Operating Lease, Liability, Payments, Due Year Two	4,578,000
Lessee, Operating Lease, Liability, Payments, Due Year Three	3,341,000
Lessee, Operating Lease, Liability, Payments, Due Year Four	2,866,000
Lessee, Operating Lease, Liability, Payments, Due Year Five	1,529,000
Lessee, Operating Lease, Liability, Payments, Due after Year Five	1,490,000
Lessee, Operating Lease, Liability, Payments, Due	16,854,000
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(2,286,000)
Operating Lease, Liability	14,568,000
Operating Lease, Liability, Current	(4,739,000)	$ (5,955,000)
Operating Lease, Liability, Noncurrent	9,829,000	$ 13,196,000
Financing Leases
Finance Lease, Liability, Payments, Remainder of Fiscal Year	97,000
Finance Lease, Liability, Payments, Due Year Two	190,000
Finance Lease, Liability, Payments, Due Year Three	160,000
Finance Lease, Liability, Payments, Due Year Four	99,000
Finance Lease, Liability, Payments, Due Year Five	77,000
Finance Lease, Liability, Payments, Due after Year Five	0
Finance Lease, Liability, Payment, Due	623,000
Finance Lease, Liability, Undiscounted Excess Amount	(67,000)
Finance Lease, Liability	556,000
Finance Lease, Liability, Current	(160,000)
Finance Lease, Liability, Noncurrent	396,000
Operating And Finance Lease Liabilities, Payments Due [Abstract]
Lessee, Lease, Liability, Payments, Remainder of Fiscal Year	3,147,000
Lessee, Lease, Liability, Payments, Due Year Two	4,768,000
Lessee, Lease, Liability, Payments, Due Year Three	3,501,000
Lessee, Lease, Liability, Payments, Due Year Four	2,965,000
Lessee, Lease, Liability, Payments, Due Year Five	1,606,000
Lessee, Lease, Liability, Payments, Due after Year Five	1,490,000
Lease Liability, Payments, Due	17,477,000
Lease Liability, Undiscounted Excess Amount	(2,353,000)
Lease Liability	15,124,000
Lease Liability, Current	(4,899,000)
Lease Liability, Noncurrent	$ 10,225,000