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Employee Benefit Plans - Schedule of Net Periodic Benefit Cost Not Yet Recognized (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2023
Retirement Benefits, Description [Abstract]      
Unamortized net actuarial gain $ 384 $ 384 $ 345
Deferred tax expense (81) (81) (72)
Net unrecognized postretirement benefits included in AOCI $ 303 $ 303 $ 273