Leases - Balance Sheet Information and Weighted-Average Lease Terms and Discount Rates Related to Leases (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Leases [Abstract]
Finance lease right-of-use assets, net of accumulated depreciation	$ 11,230
Finance lease liabilities	11,220
Operating lease right-of-use assets	33,861
Operating lease liabilities	$ 34,921
Weighted-average lease term
Finance leases	8 years 6 months 29 days
Operating leases	9 years 7 months 20 days
Weighted-average discount rate
Finance leases	3.02%
Operating leases	3.59%