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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]  
Lease, Cost
The components of lease cost for operating leases are as follows:
Year Ended December 31, 2021Year Ended December 31, 2020
(In thousands)
Lease cost$24,208 $24,488 
Variable lease cost713 1,090 
Operating lease expense$24,921 $25,578 
The components of lease cost for finance leases are as follows:
Year Ended December 31, 2021Year Ended December 31, 2020
(In thousands)
Lease amortization$1,021 $711 
Lease interest162 53 
Finance lease expense$1,183 $764 
Schedule Of Lease By Asset Type
The operating lease liabilities on a discounted basis arising from obtaining ROU assets as of December 31, 2021 were comprised as follows:
Leased Asset ClassPolymerChemicalPercentageAverage Months Remaining on the LeaseWeighted Average in Months
(In thousands)
Railcars$1,860 $21,261 23.4 %388.9
Buildings28,677 11,068 40.3 %3915.7
Equipment6,396 16,181 22.9 %306.9
Land6,806 40 6.9 %23216.1
Other1,769 4,682 6.5 %241.5
Total$45,508 $53,232 49.1
The finance lease liabilities on a discounted basis arising from obtaining ROU assets as of December 31, 2021 were comprised as follows:
Leased Asset ClassPolymerChemicalPercentageAverage Months Remaining on the LeaseWeighted Average in Months
(In thousands)
Equipment$645 $2,518 100.0 %6160.9
Total$645 $2,518 60.9
Lessee, Operating Lease, Liability, Maturity
The following tables show the undiscounted cash flows for the operating lease liabilities.
 December 31, 2021
 (In thousands)
2022$23,410 
202320,538 
202415,895 
202513,569 
202612,094 
Thereafter25,567 
Total undiscounted operating lease liabilities111,073 
Present value discount(12,356)
Foreign currency and other23 
Total discounted operating lease liabilities$98,740 
 December 31, 2020
 (In thousands)
2020$21,098 
202115,992 
202214,309 
202310,668 
20248,605 
Thereafter26,988 
Total undiscounted operating lease liabilities97,660 
Present value discount(11,474)
Foreign currency and other11 
Total discounted operating lease liabilities$86,197 
Schedule of finance lease, liability, maturity
The following tables show the undiscounted cash flows for the finance lease liabilities.
 December 31, 2021
 (In thousands)
2022$1,105 
20231,147 
20241,147 
202518 
20263 
Thereafter— 
Total undiscounted finance lease liabilities3,420 
Present value discount(262)
Foreign currency and other5 
Total discounted finance lease liabilities$3,163 
 December 31, 2020
 (In thousands)
2021$232 
2022232 
2023232 
2024232 
2025— 
Thereafter— 
Total undiscounted finance lease liabilities928 
Present value discount(92)
Foreign currency and other(1)
Total discounted finance lease liabilities$835 
Changes in the aggregate carrying amount of ARO liability
The changes in the aggregate carrying amount of our ARO liability are as follows: 
December 31,
 20212020
 (In thousands)
Beginning balance$6,332 $6,523 
Additional accruals 316 119 
Accretion expense407 348 
Obligations settled(1,285)(1,164)
Foreign currency translation(383)506 
Ending balance$5,387 $6,332