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Employee Benefit Plans (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Retirement Plan        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost $ 691 $ 657 $ 1,371 $ 1,285
Expected return on assets (1,462) (1,273) (2,923) (2,710)
Net loss amortization 169 (19) 320 501
Net periodic benefit cost (income) (602) (635) (1,232) (924)
Retirement Plan Acquired        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost 25 22 51 46
Expected return on assets (57) (47) (116) (105)
Net loss amortization 0 0 0 3
Net periodic benefit cost (income) (32) (25) (65) (56)
Restoration Plan        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost 150 139 289 260
Expected return on assets 0 0 0 0
Net loss amortization 72 10 127 128
Net periodic benefit cost (income) $ 222 $ 149 $ 416 $ 388