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Employee Benefit Plans Net Periodic Benefit Cost (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Pension Plans      
Defined Benefit Plan Disclosure [Line Items]      
Interest cost $ 2,393 $ 2,244 $ 2,726
Expected return on assets (4,393) (4,044) (3,925)
Net amortization and deferral 653 2,017 1,859
Net periodic benefit cost (1,347) 217 660
Other Postretirement Benefit Plans      
Defined Benefit Plan Disclosure [Line Items]      
Interest cost 34 32 43
Net amortization and deferral (525) (536) (548)
Net periodic benefit cost $ (491) $ (504) $ (505)