Business Overview and Summary of Significant Accounting Policies - Operating and Financing Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Leases
Operating lease right-to-use assets, net of amortization	$ 6,796
Operating lease liability (current)	2,218
Long-term operating liability	5,657
Total operating lease liabilities	7,875
Property, equipment and leasehold improvements	81,197	$ 92,856
Accumulated depreciation	(44,338)	(53,746)
Total financing leases in property, equipment and leasehold improvements, net	43,655	$ 39,110
Financing lease liability (current)	2,207
Long-term financing liability	3,427
Total financing lease liabilities	5,634
Financing leases
Leases
Property, equipment and leasehold improvements	7,014
Accumulated depreciation	(782)
Total financing leases in property, equipment and leasehold improvements, net	$ 6,232