FAIR VALUE MEASUREMENTS - Narratives (Details) |
Dec. 31, 2025
USD ($)
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| Needham Bank 401(k) Plan | Pooled separate accounts | |
| FAIR VALUE MEASUREMENTS | |
| Unfunded commitments | $ 0 |
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- Definition Amount of unfunded commitment for investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), that is fair value measured at net asset value (NAV) per share as practical expedient. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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/2003/role/disclosureRef
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