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Benefit Plans - Components of Company Plan Benefit Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Change in Projected Benefit Obligation          
Projected benefit obligation, beginning of period     $ 26,207 $ 31,830 $ 31,830
Service cost $ 186 $ 280 559 839 1,118
Interest cost 336 $ 240 1,009 $ 721 962
Actuarial gain         (6,710)
Benefits paid     (591)   (993)
Projected benefit obligation, end of period 27,184   27,184   26,207
Change in Plan Assets          
Company contributions     591   993
Benefits paid     (591)   (993)
Unfunded Status of the Plan $ 27,184   $ 27,184   $ 26,207