Leases - Lease Assets and Liabilities (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Assets
Operating lease assets	$ 33,277
Finance lease assets	8,058
Current
Operating lease liabilities	15,123
Accrued expenses	3,077
Long-term
Operating lease liabilities	18,621
Other long-term liabilities	$ 4,981
Weighted average remaining lease term
Operating leases	2 years 3 months 18 days
Finance leases	2 years 8 months 12 days
Weighted average discount rate
Operating leases	5.20%
Finance leases	3.70%