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Post Retirement Benefits - Schedule of Post Retirement Benefits Expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Pension expense:      
Multi-employer plan $ 1,137 $ 857 $ 676
Defined contribution plans 1,482 1,231 1,173
Total pension expense 2,619 2,088 1,849
Health and life insurance:      
Interest cost 198 161 235
Amortization of prior service credits (496) (496) (496)
Amortization of net loss 174 173 181
Net periodic benefit credit (124) (162) (80)
Total post retirement benefits expense $ 2,495 $ 1,926 $ 1,769