Leases Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Operating leases:
Operating lease right-of-use asset	$ 24,616	$ 26,107
Current operating lease liability	5,334	5,557
Operating lease liability - less current portion	20,848	21,985
Total operating lease liability	26,182	27,542
Finance leases:
Property and equipment, at cost	1,458	1,813
Accumulated depreciation	(1,099)	(1,415)
Property and equipment, net	359	398
Current finance lease liability	262	278
Finance lease liability - less current portion	117	146
Total finance lease liability	$ 379	$ 424
Weighted Average Remaining Lease Term (in years):
Operating leases	6 years 4 months 24 days	6 years 6 months 18 days
Finance leases	1 year 10 months 17 days	1 year 11 months 4 days
Weighted Average Discount Rate:
Operating leases	5.68%	5.66%
Finance leases	5.06%	5.07%
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, plant and equipment, net	Property, plant and equipment, net
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Lease liability	Lease liability
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Lease liability - less current portion	Lease liability - less current portion
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:Liabilities	us-gaap:Liabilities