Schedule H, Line 4i - Schedule of Assets (Held At End of Year) (Details) - ArcBest 401(k) and DC Retirement Plan
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12 Months Ended |
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Dec. 31, 2025
USD ($)
shares
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| Entity tax identification number |
71-0673405
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| Plan number |
002
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| Current Value |
$ 866,052,351
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| Notes receivable from participants |
$ 9,152,591
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| Investment, Identifier [Axis]: ArcBest Corporation, ArcBest Corporation Stock Fund - Common Stock |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:ArcbestCorporationMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Employer stock fund
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| Current Value |
$ 3,412,517
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| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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| Investment, Identifier [Axis]: ArcBest Corporation, ArcBest Corporation Stock Fund - Money Market Fund |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:ArcbestCorporationMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Employer stock fund
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| Current Value |
$ 87,659
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| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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| Investment, Identifier [Axis]: Charles Schwab Trust Bank, Cash Reserve Account, Cash |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:CharlesSchwabTrustBankMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
us-gaap:CashMember
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| Current Value |
$ 5,382
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| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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| Investment, Identifier [Axis]: Charles Schwab amp; Co., Inc., Personal Choice Retirement Accounts |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:CharlesSchwabCo.IncMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Self-directed brokerage accounts
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| Current Value |
$ 9,977,806
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| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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| Investment, Identifier [Axis]: Galliard Capital Management, Galliard Stable Return Fund C, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:GalliardCapitalManagementMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
452,225
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| Current Value |
$ 28,652,947
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Development Mkt Idx Trust Unit D, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
1,573,807
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| Current Value |
$ 55,335,037
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Emrg Markets Index Admiral, Mutual Funds |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual funds
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| Number of Shares | shares |
131,424
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| Current Value |
$ 5,862,821
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Inflation Protected Secs I, Mutual Funds |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual funds
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| Number of Shares | shares |
1,317,209
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| Current Value |
$ 12,329,080
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Institutional 500 Indx Unit D, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
1,910,428
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| Current Value |
$ 266,562,032
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Institutional Ttl Bond Idx Unit D, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
349,532
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| Current Value |
$ 38,504,463
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Midcap Index Institutional, Mutual Funds |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual funds
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| Number of Shares | shares |
699,971
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| Current Value |
$ 55,563,708
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Real Estate Index Admiral, Mutual Funds |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual funds
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| Number of Shares | shares |
17,624
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| Current Value |
$ 2,209,873
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Small Cap Index Institutional, Mutual Funds |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual funds
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| Number of Shares | shares |
244,074
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| Current Value |
$ 30,162,624
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Target 2020, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
126,344
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| Current Value |
$ 6,648,238
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Target 2025, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
486,572
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| Current Value |
$ 27,578,908
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Target 2030, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
583,309
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| Current Value |
$ 34,654,407
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Target 2035, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
857,648
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| Current Value |
$ 54,443,488
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Target 2040, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
529,798
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| Current Value |
$ 36,428,907
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Target 2045, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
701,790
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| Current Value |
$ 50,900,816
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Target 2050, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
574,482
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| Current Value |
$ 42,999,976
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Target 2055, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
474,169
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| Current Value |
$ 47,540,174
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Target 2060, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
307,106
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| Current Value |
$ 24,304,399
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Target 2065, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
264,629
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| Current Value |
$ 12,892,743
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Target 2070, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
22,568
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| Current Value |
$ 670,734
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Target Retirement Income, Collective Trust Investment |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Collective trust funds
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| Number of Shares | shares |
219,502
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| Current Value |
$ 10,999,256
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Total Bond Market Index, Mutual Funds |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual funds
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| Number of Shares | shares |
4
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| Current Value |
$ 35
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| Investment, Identifier [Axis]: Vanguard Trust Company, Vanguard Total Intl Bond Idx Institutional, Mutual Funds |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
arcb:VanguardTrustCompanyMember
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual funds
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| Number of Shares | shares |
252,313
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| Current Value |
$ 7,329,703
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| Minimum |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| Interest rates of notes receivable from participants |
4.25%
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| Maximum |
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| Schedule H, Line 4i - Schedule of Assets (Held At End of Year) |
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| Interest rates of notes receivable from participants |
10.50%
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