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Retirement Plans (Details) - Defined Benefit Plan [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]    
Service cost $ 408 $ 436
Interest cost 244 212
Expected return on plan assets (205) (184)
Recognized actuarial loss 12 69
Total defined benefit expense $ 459 $ 533