Annual report pursuant to Section 13 and 15(d)

Other Long-term Liabilities Other Long-term Liabilities (Details)

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Other Long-term Liabilities Other Long-term Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Other Liabilities Disclosure [Abstract]    
Pension plan liabilities $ 3,551 $ 11,542
Other postretirement benefit plan liabilities 607 634
Finance lease and financing obligation liabilities 11,667 349
Reserve for uncertain tax positions 7,658 0
Other 614 2,874
Other Liabilities, Noncurrent, Total $ 24,094 $ 15,399