Employee Benefit Plan, Schedule, Asset Held for Investment (Details) - EBP 002
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12 Months Ended |
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Dec. 31, 2025
USD ($)
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution |
$ 16,180,252
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[1] |
| Entity Tax Identification Number |
73-0780382
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| EBP, Plan Number |
002
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| EBP, Plan Name |
BOK FINANCIAL 401(k) PLAN
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| EBP, Asset Held for Investment |
$ 1,327,692,964
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| Investment, Identifier [Axis]: American Beacon International Value Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
American Beacon [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 12,726,090
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Equity Funds [Member]
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| Investment, Identifier [Axis]: American Funds Balanced Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
American Funds [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 45,996,799
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Balanced Funds [Member]
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| Investment, Identifier [Axis]: BOK Financial Corporation BOKF Common Stock |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
BOK Financial Corporation [Member]
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[1] |
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 51,063,570
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[1] |
| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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[1] |
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
BOKF common stock
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[1] |
| Investment, Identifier [Axis]: BOKF Retirement Fund 2020 Class III Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
BOK Financial Retirement Fund [Member]
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[1] |
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 25,591,578
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[1] |
| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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[1] |
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Registered investment companies
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[1] |
| Investment, Identifier [Axis]: BOKF Retirement Fund 2030 Class III Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
BOK Financial Retirement Fund [Member]
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[1] |
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 101,453,379
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[1] |
| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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[1] |
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Registered investment companies
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[1] |
| Investment, Identifier [Axis]: BOKF Retirement Fund 2040 Class III Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
BOK Financial Retirement Fund [Member]
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[1] |
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 107,647,029
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[1] |
| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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[1] |
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Registered investment companies
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[1] |
| Investment, Identifier [Axis]: BOKF Retirement Fund 2050 Class III Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
BOK Financial Retirement Fund [Member]
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[1] |
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 92,532,836
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[1] |
| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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[1] |
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Registered investment companies
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[1] |
| Investment, Identifier [Axis]: BOKF Retirement Fund 2060 Class III Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
BOK Financial Retirement Fund [Member]
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[1] |
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 36,537,423
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[1] |
| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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[1] |
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Registered investment companies
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[1] |
| Investment, Identifier [Axis]: BOKF Retirement Fund 2070 Class III Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
BOK Financial Retirement Fund [Member]
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[1] |
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 3,837,720
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[1] |
| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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[1] |
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Registered investment companies
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[1] |
| Investment, Identifier [Axis]: BOKF Retirement Fund Conservative Class III Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
BOK Financial Retirement Fund [Member]
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[1] |
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 5,696,581
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[1] |
| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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[1] |
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Registered investment companies
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[1] |
| Investment, Identifier [Axis]: BOKF Retirement Fund Income Class III Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
BOK Financial Retirement Fund [Member]
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[1] |
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 498,414
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[1] |
| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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[1] |
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Registered investment companies
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[1] |
| Investment, Identifier [Axis]: BOKF Strategic International Fund Strategic International Class III Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
BOK Financial Strategic International Fund [Member]
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[1] |
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 23,541,673
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[1] |
| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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[1] |
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Registered investment companies
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[1] |
| Investment, Identifier [Axis]: Cavanal Hill Funds Government Securities Money Market Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Cavanal Hill Funds [Member]
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[1] |
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 64,265,543
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[1] |
| EBP, Asset Held for Investment, Party-in-Interest [true false] |
true
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[1] |
| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Money Market Funds [Member]
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[1] |
| Investment, Identifier [Axis]: Dodge and Cox Large Cap Value Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Dodge and Cox [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 89,906,149
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Equity Funds [Member]
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| Investment, Identifier [Axis]: Fidelity Large Cap Core Index Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Fidelity [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 185,302,003
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Equity Funds [Member]
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| Investment, Identifier [Axis]: Invesco Oppenheimer International Growth Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Invesco Oppenheimer [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 11,601,152
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Registered investment companies
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| Investment, Identifier [Axis]: JP Morgan Large Cap Growth Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
JP Morgan [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 146,678,775
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Equity Funds [Member]
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| Investment, Identifier [Axis]: John Hancock Disciplined Value Midcap Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
John Hancock [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 22,749,341
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Equity Funds [Member]
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| Investment, Identifier [Axis]: MFS Investment Management Mid Cap Growth |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
MFS Investment Management [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 41,050,991
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Equity Funds [Member]
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| Investment, Identifier [Axis]: Metropolitan West Total Return Bond Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Metropolitan West [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 28,153,998
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Fixed Income Funds [Member]
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| Investment, Identifier [Axis]: Neuberger and Berman Small Cap Core Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Neuberger and Berman [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 35,488,915
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Equity Funds [Member]
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| Investment, Identifier [Axis]: Self-directed brokerage accounts, common stocks, bonds, and RICs |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Self-directed brokerage accounts [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 92,085,693
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Self-directed brokerage accounts
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| Investment, Identifier [Axis]: Vanguard Midcap Index Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Vanguard [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 45,427,718
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Registered investment companies
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| Investment, Identifier [Axis]: Vanguard Short Term Bond Index Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Vanguard [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 21,817,581
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Fixed Income Funds [Member]
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| Investment, Identifier [Axis]: Vanguard Small Cap Value Index Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Vanguard [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 19,861,761
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Registered investment companies
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| Minimum [Member] |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Asset Held for Investment, Participant Loan, Interest Rate |
3.25%
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| Maximum [Member] |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Asset Held for Investment, Participant Loan, Interest Rate |
8.50%
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