Leases - Leases Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Other assets	$ 132,777	$ 133,864
Accrued expenses	18,013	23,137
Other noncurrent liabilities	116,394	114,686
Total operating lease liabilities	134,407	137,823
Net property, plant and equipment	58,962	59,494
Current portion of long-term debt(a)	1,412	636
Long-term debt	58,576	58,888
Total finance lease liabilities	$ 59,988	$ 59,524
Weighted average remaining lease term, operating leases	16 years 4 months 24 days	11 years 4 months 24 days
Weighted average remaining lease term, finance leases	27 years 8 months 12 days	28 years 3 months 18 days
Weighted average discount rate, operating leases, percent	4.06%	3.84%
Weighted average discount rate, finance leases, percent	4.56%	4.56%