Leases Leases Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Leases [Abstract]
Other assets	$ 124,872
Current operating lease liability	19,441	$ 0
Other noncurrent liabilities	106,788
Total operating lease liabilities	126,229
Net property, plant and equipment	4,089
Current portion of long-term debt	691
Long-term debt	3,459
Total finance lease liabilities	$ 4,150
Weighted average remaining lease term, operating leases	11 years 8 months 12 days
Weighted average remaining lease term, finance leases	6 years 2 months 12 days
Weighted average discount rate, operating leases, percent	3.87%
Weighted average discount rate, finance leases, percent	2.89%