Leases Operating and Finance Lease Liability (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Operating Leases
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 1,892,000
Lessee, Operating Lease, Liability, Payments, Due Year Two	6,173,000
Lessee, Operating Lease, Liability, Payments, Due Year Three	4,127,000
Lessee, Operating Lease, Liability, Payments, Due Year Four	2,620,000
Lessee, Operating Lease, Liability, Payments, Due Year Five	1,746,000
Lessee, Operating Lease, Liability, Payments, Due after Year Five	2,646,000
Lessee, Operating Lease, Liability, Payments, Due	19,204,000
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(2,824,000)
Operating Lease, Liability	16,380,000
Operating Lease, Liability, Current	5,578,000	$ 0
Operating Lease, Liability, Noncurrent	10,802,000	$ 0
Financing Leases
Finance Lease, Liability, Payments, Remainder of Fiscal Year	52,000
Finance Lease, Liability, Payments, Due Year Two	201,000
Finance Lease, Liability, Payments, Due Year Three	190,000
Finance Lease, Liability, Payments, Due Year Four	160,000
Finance Lease, Liability, Payments, Due Year Five	99,000
Finance Lease, Liability, Payments, Due after Year Five	77,000
Finance Lease, Liability, Payment, Due	779,000
Finance Lease, Liability, Undiscounted Excess Amount	(91,000)
Finance Lease, Liability	688,000
Finance Lease, Liability, Current	177,000
Finance Lease, Liability, Noncurrent	511,000
Operating And Finance Lease Liabilities, Payments Due [Abstract]
Lessee, Lease, Liability, Payments, Remainder of Fiscal Year	1,944,000
Lessee, Lease, Liability, Payments, Due Year Two	6,374,000
Lessee, Lease, Liability, Payments, Due Year Three	4,317,000
Lessee, Lease, Liability, Payments, Due Year Four	2,780,000
Lessee, Lease, Liability, Payments, Due Year Five	1,845,000
Lessee, Lease, Liability, Payments, Due after Year Five	2,723,000
Lease Liability, Payments, Due	19,983,000
Lease Liability, Undiscounted Excess Amount	(2,915,000)
Lease Liability	17,068,000
Lease Liability, Current	5,755,000
Lease Liability, Noncurrent	$ 11,313,000