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Leases - Leases Balance Sheet (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Leases [Abstract]    
Other assets $ 128,211 $ 136,292
Accrued expenses 19,784 22,297
Other noncurrent liabilities 111,719 116,765
Total operating lease liabilities 131,503 139,062
Net property, plant and equipment 58,701 58,963
Current portion of long-term debt(a) 2,046 1,752
Long-term debt 58,294 58,543
Total finance lease liabilities $ 60,340 $ 60,295
Weighted average remaining lease term, operating leases 15 years 8 months 12 days 15 years 3 months 18 days
Weighted average remaining lease term, finance leases 27 years 4 months 24 days 27 years 6 months
Weighted average discount rate, operating leases, percent 3.96% 3.94%
Weighted average discount rate, finance leases, percent 4.56% 4.56%