Leases - Supplemental Balance Sheet Information (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Operating leases
Operating lease right-of-use assets	$ 22,140
Current operating lease liabilities	4,214
Noncurrent operating lease liabilities	21,231
Total operating lease liabilities	25,445
Finance leases
Current obligations of finance leases	334
Finance leases, net of current obligations	6
Total finance lease liabilities	$ 340
Weighted average remaining lease term (in years): Operating leases	8 years 7 months 6 days
Weighted average remaining lease term (in years): Finance leases	6 months
Weighted average discount rate: Operating leases (as a percent)	4.43%
Weighted average discount rate: Finance leases (as a percent)	6.06%
Office space and equipment, Finance leases
Finance leases
Property and equipment	$ 3,477
Accumulated amortization	(2,925)
Property and equipment, net	$ 552