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Annual report pursuant to Section 13 and 15(d)

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

v3.22.0.1
Pension and Other Postretirement Benefits - Fair Values of Plan Assets by Major Asset Category (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets $ 10,713 $ 7,567 $ 6,615
Cash and cash equivalents — money markets Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 567 1,277 Ìý
Equities Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 3,490 1,567 Ìý
Equity funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 1,342 1,503 Ìý
Fixed income funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 596 797 Ìý
Taxable bonds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 4,718 2,423 Ìý
Quoted Prices in Active Markets for Identical Assets (Level 1) Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 10,713 7,567 Ìý
Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and cash equivalents — money markets Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 567 1,277 Ìý
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equities Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 3,490 1,567 Ìý
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 1,342 1,503 Ìý
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fixed income funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 596 797 Ìý
Quoted Prices in Active Markets for Identical Assets (Level 1) | Taxable bonds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 4,718 2,423 Ìý
Significant Other Observable Inputs (Level 2) Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 0 0 Ìý
Significant Other Observable Inputs (Level 2) | Cash and cash equivalents — money markets Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 0 0 Ìý
Significant Other Observable Inputs (Level 2) | Equities Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 0 0 Ìý
Significant Other Observable Inputs (Level 2) | Equity funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 0 0 Ìý
Significant Other Observable Inputs (Level 2) | Fixed income funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 0 0 Ìý
Significant Other Observable Inputs (Level 2) | Taxable bonds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 0 0 Ìý
Significant Unobservable Inputs (Level 3) Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 0 0 Ìý
Significant Unobservable Inputs (Level 3) | Cash and cash equivalents — money markets Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 0 0 Ìý
Significant Unobservable Inputs (Level 3) | Equities Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 0 0 Ìý
Significant Unobservable Inputs (Level 3) | Equity funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 0 0 Ìý
Significant Unobservable Inputs (Level 3) | Fixed income funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets 0 0 Ìý
Significant Unobservable Inputs (Level 3) | Taxable bonds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of Pension Plan assets $ 0 $ 0 Ìý