Leases - Supplemental Balance Sheet Information Related to Leases (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Operating leases:
Operating lease ROU assets	$ 60,217
Current operating lease liabilities	12,235
Noncurrent operating lease liabilities	29,920
Total operating lease liabilities	42,155
Finance leases:
Finance lease ROU assets	3,396
Accumulated amortization	(1,680)
Finance lease ROU assets, net	1,716
Current finance lease liabilities	896
Non-current finance lease liabilities	367
Total finance lease liabilities	$ 1,263
Weighted average remaining lease term (in years):
Operating leases	4 years 7 months 6 days
Finance leases	1 year 6 months
Weighted average discount rate:
Operating leases	3.80%
Finance leases	3.60%