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Other Noncurrent Liabilities
 12 Months Ended
Dec. 31, 2021
Other Liabilities Disclosure [Abstract]  
Other Noncurrent Liabilities
19. Other Noncurrent Liabilities
As of December 31, 2021 and 2020, Other Noncurrent Liabilities consisted of the following:
(in thousands)
20212020
Postretirement benefits other than pensions$41,257 $44,317 
Pension liabilities30,850 35,607 
Finance leases14,515 16,121 
Operating leases11,001 13,589 
Interest rate swap agreements5,176 12,714 
Deferred payroll taxes— 2,593 
Incentive and deferred compensation3,257 2,286 
Other1,738 3,197 
Total$107,794 $130,424