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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Accumulated other comprehensive loss, beginning balance $ (100,119) $ (98,989)  
Other comprehensive income (loss) before reclassifications, net of tax 21,224 (4,878)  
Amounts reclassified from accumulated other comprehensive loss, net of tax 4,986 3,748  
Net current-period other comprehensive income (loss) 26,210 (1,130)  
Accumulated other comprehensive loss, ending balance (73,909) (100,119) $ (98,989)
Other comprehensive income (loss) before reclassifications, tax amount 42 (23) (77)
Defined Benefit Pension Items      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Accumulated other comprehensive loss, beginning balance (99,789) (98,734)  
Other comprehensive income (loss) before reclassifications, net of tax 21,090 (4,803)  
Amounts reclassified from accumulated other comprehensive loss, net of tax 4,986 3,748  
Net current-period other comprehensive income (loss) 26,076 (1,055)  
Accumulated other comprehensive loss, ending balance (73,713) (99,789) (98,734)
Other comprehensive income (loss) before reclassifications, tax amount 6,540 (1,492)  
Amounts reclassified from AOCI, tax amount 1,546 1,164  
Other      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Accumulated other comprehensive loss, beginning balance (330) (255)  
Other comprehensive income (loss) before reclassifications, net of tax 134 (75)  
Amounts reclassified from accumulated other comprehensive loss, net of tax 0 0  
Net current-period other comprehensive income (loss) 134 (75)  
Accumulated other comprehensive loss, ending balance (196) (330) $ (255)
Other comprehensive income (loss) before reclassifications, tax amount $ 42 $ (23)