Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Operating leases:
Operating lease right-of-use assets	$ 27,254	$ 0
Short-term lease liabilities, included in Other accrued liabilities	5,039
Long-term lease liabilities	22,138	$ 0
Total operating lease liabilities	27,177
Finance leases:
Property, plant and equipment	1,455
Accumulated depreciation	(443)
Property, plant and equipment, net	1,012
Short-term lease liabilities, included in debt	219
Long-term lease liabilities, included in debt	24
Total finance lease liabilities	$ 243
Weighted average remaining lease term:
Operating leases	7 years 7 months 7 days
Finance leases	8 months 13 days