Annual report pursuant to Section 13 and 15(d)

Pension and Other Postretirement Benefits - Fair Values of Plan Assets by Major Asset Category (Details)

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Pension and Other Postretirement Benefits - Fair Values of Plan Assets by Major Asset Category (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]      
Fair value of Pension Plan assets $ 12,611 $ 14,201 $ 11,650
Cash and cash equivalents — money markets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of Pension Plan assets 574 1,179  
Equities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of Pension Plan assets 8,600 8,182  
Equity funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of Pension Plan assets 1,049 401  
Fixed income funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of Pension Plan assets 0 1,000  
Taxable bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of Pension Plan assets $ 2,388 $ 3,439