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Pension Plan - Weighted Average Assumptions and Net Periodic Pension Cost (Details) - Pension Plan - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
May 31, 2014
Weighted average assumptions used to determine the benefit obligation        
Discount rate 5.01% 5.23% 2.83% 4.50%
Components of net periodic pension cost        
Interest cost $ 450 $ 341 $ 313  
Expected return on plan assets (655) (669) (689)  
Amortization of net actuarial loss 117 429 507  
Net periodic pension cost (income) $ (88) $ 101 $ 131  
Weighted average assumptions used to determine net periodic pension cost        
Discount rate 5.01% 5.23% 2.83%  
Expected long-term rate of return on plan assets 5.75% 6.00% 6.75%