Description of Plan (Details) - Bank First Retirement Plan - USD ($) |
12 Months Ended | |
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Dec. 31, 2025 |
Dec. 31, 2024 |
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| Description of Plan | ||
| Threshold participant vested balance | $ 5,000 | |
| Forfeited nonvested accounts | 23,518 | $ 89,012 |
| Forfeited accounts allocated to participants | $ 89,012 | |
| Vesting percentage | 100.00% | |
| Maximum | ||
| Description of Plan | ||
| Participant transfers restriction period | 90 days |
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- Definition Threshold balance of participant account below which amount automatically distributed as lumpsum amount immediately. Beyond threshold amount participants can choose the date of distribution in Employee benefit plan. No definition available.
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- Definition Participants transfers restriction period under fully benefit responsive investment contracts. No definition available.
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- Definition Represent the percentage of vesting in case of plan termination. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of plan asset, in forfeited nonvested account, no longer allocated to participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of decrease in forfeited nonvested account of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) from reallocation to participant. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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