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Employee Benefits - Pension Plan Assets Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value $ 71,574 $ 73,086 $ 107,525
Fair Value Measurements, Recurring      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 71,574 73,086  
Fair Value Measurements, Recurring | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 934 939  
Fair Value Measurements, Recurring | Fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 63,629 64,878  
Fair Value Measurements, Recurring | Equity index mutual funds - international      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 2,086 2,231  
Fair Value Measurements, Recurring | Domestic individual equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 4,925 5,038  
Fair Value Measurements, Recurring | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 71,574 73,086  
Fair Value Measurements, Recurring | Level 1 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 934 939  
Fair Value Measurements, Recurring | Level 1 | Fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 63,629 64,878  
Fair Value Measurements, Recurring | Level 1 | Equity index mutual funds - international      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 2,086 2,231  
Fair Value Measurements, Recurring | Level 1 | Domestic individual equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 4,925 5,038  
Fair Value Measurements, Recurring | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 0 0  
Fair Value Measurements, Recurring | Level 2 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 0 0  
Fair Value Measurements, Recurring | Level 2 | Fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 0 0  
Fair Value Measurements, Recurring | Level 2 | Equity index mutual funds - international      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 0 0  
Fair Value Measurements, Recurring | Level 2 | Domestic individual equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 0 0  
Fair Value Measurements, Recurring | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 0 0  
Fair Value Measurements, Recurring | Level 3 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 0 0  
Fair Value Measurements, Recurring | Level 3 | Fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 0 0  
Fair Value Measurements, Recurring | Level 3 | Equity index mutual funds - international      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value 0 0  
Fair Value Measurements, Recurring | Level 3 | Domestic individual equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Assets at Fair Value $ 0 $ 0