Leases - Supplemental Balance Sheet Information Related to Leases (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Operating Leases:
Right-of-use assets, net	$ 49,584
Other current liabilities	12,936
Operating lease liabilities	37,037
Finance Leases:
Property, plant and equipment, net	1,286
Current maturities of long-term debt	1,054
Long-term debt	$ 945