v3.26.1
Schedule H, Line 4i – Schedule of Assets (Held At End of Year) (Details) - EBP 001
12 Months Ended
Dec. 31, 2025
USD ($)
shares
EBP, Schedule of Asset Held for Investment [Line Items]  
Entity tax identification number 42-0617510
Plan number 001
LOANS TO PARTICIPANTS (maturing from 2026 - 2040, with interest rates from 4.25% to 10.50%) $ 18,804,628
Total assets held at end of year $ 1,581,885,284
Minimum  
EBP, Schedule of Asset Held for Investment [Line Items]  
Participant loan, interest rate 4.25%
Maximum  
EBP, Schedule of Asset Held for Investment [Line Items]  
Participant loan, interest rate 10.50%
Investment, Identifier [Axis]: COMMON COLLECTIVE FUNDS | Galliard Stable Return Fund C  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value $ 19,932,203
Investment, Identifier [Axis]: COMMON COLLECTIVE FUNDS | Vanguard Target 2020  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 113,326,041
Investment, Identifier [Axis]: COMMON COLLECTIVE FUNDS | Vanguard Target 2025  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 63,553,441
Investment, Identifier [Axis]: COMMON COLLECTIVE FUNDS | Vanguard Target 2030  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 330,741,311
Investment, Identifier [Axis]: COMMON COLLECTIVE FUNDS | Vanguard Target 2035  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 113,928,882
Investment, Identifier [Axis]: COMMON COLLECTIVE FUNDS | Vanguard Target 2040  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 246,584,245
Investment, Identifier [Axis]: COMMON COLLECTIVE FUNDS | Vanguard Target 2045  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 45,787,677
Investment, Identifier [Axis]: COMMON COLLECTIVE FUNDS | Vanguard Target 2050  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 144,130,549
Investment, Identifier [Axis]: COMMON COLLECTIVE FUNDS | Vanguard Target 2055  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 26,504,241
Investment, Identifier [Axis]: COMMON COLLECTIVE FUNDS | Vanguard Target 2060  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 50,736,713
Investment, Identifier [Axis]: COMMON COLLECTIVE FUNDS | Vanguard Target 2065  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 8,044,713
Investment, Identifier [Axis]: COMMON COLLECTIVE FUNDS | Vanguard Target 2070  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 2,957,600
Investment, Identifier [Axis]: COMMON COLLECTIVE FUNDS | Vanguard Target Inc.  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 42,684,783
Investment, Identifier [Axis]: FIDELITY BROKERAGE LINK  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value $ 72,755,836
Investment, Identifier [Axis]: HNI CORPORATION COMMON STOCK  
EBP, Schedule of Asset Held for Investment [Line Items]  
Investment, number of shares (in shares) | shares 2,014,252.162
Cost $ 70,648,557
Market value 84,683,125
Investment, Identifier [Axis]: MUTUAL FUNDS AND MONEY MARKET FUNDS | AF EuroPac Growth R6  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 18,637,978
Investment, Identifier [Axis]: MUTUAL FUNDS AND MONEY MARKET FUNDS | Doubleline Core Fixed Income  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 14,934,522
Investment, Identifier [Axis]: MUTUAL FUNDS AND MONEY MARKET FUNDS | Fidelity Cash Reserves  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value 2,463,331
Investment, Identifier [Axis]: MUTUAL FUNDS AND MONEY MARKET FUNDS | Vanguard Total Stock Market IP  
EBP, Schedule of Asset Held for Investment [Line Items]  
Market value $ 160,693,465