Leases Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Operating leases:
Operating lease right-of-use asset	$ 18,672	$ 0
Current operating lease liability	6,290
Operating lease liability - less current portion	13,418
Total operating lease liability	19,708	19,708
Finance leases:
Property and equipment, at cost	1,851
Accumulated depreciation	(1,069)
Property and equipment, net	782
Current finance lease liability	325
Finance lease liability - less current portion	504
Total finance lease liability	$ 829	$ 829
Weighted Average Remaining Lease Term (in years):
Operating leases	4 years 7 months 24 days
Finance leases	2 years 8 months 12 days
Weighted Average Discount Rate:
Operating leases	5.23%
Finance leases	5.06%