Description of Plan - Payment & Forfeited accounts (Details) - Mayville Engineering Company, Inc. 401(k) Plan - USD ($) $ in Thousands |
12 Months Ended | |
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Dec. 31, 2025 |
Dec. 31, 2024 |
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| Description of Plan | ||
| Threshold participant vested balance | $ 7 | |
| Forfeited nonvested accounts | 17 | $ 48 |
| Forfeited accounts allocated to participants | $ 203 |
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- Definition Threshold balance of participant account below which amount automatically distributed as lumpsum amount immediately in Employee benefit plan. 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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- Details
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