Related Party and Party-in-Interest Transactions (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Morgan Stanley | ||
| Related Party and Party-in-Interest Transactions | ||
| Investment advisory services cost | $ 61,485 | |
| Bar Harbor Bankshares 401(k) Plan | ||
| Related Party and Party-in-Interest Transactions | ||
| Investments, at fair value | 72,936,966 | $ 62,114,885 |
| Net appreciation in fair value of investments | $ 7,216,373 | |
| Bar Harbor Bankshares 401(k) Plan | Common Stock of BHB | Company | ||
| Related Party and Party-in-Interest Transactions | ||
| Number of shares held | 139,616 | 145,762 |
| Investments, at fair value | $ 4,307,444 | $ 4,457,388 |
| Purchases of investment | 166,508 | |
| Sale of investment | 533,824 | |
| Net appreciation in fair value of investments | 13,120 | |
| Dividend income | $ 178,621 |
| X | ||||||||||
- Definition Amount of investment advisory services fee incurred by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). No definition available.
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- Definition Amount of increase (decrease) in net asset available for benefit from unrealized gain (loss) on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of increase in net asset available for benefit from dividend income on investment held by 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 Cost of investment, excluding plan interest in master trust, acquired by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Fair value of investment, excluding plan interest in master trust, held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, derivative, investment measured at net asset value per share as practical expedient, and insurance contract not meeting fully-benefit responsive investment criteria. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of shares or units of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of selling price for investment, excluding plan interest in master trust, sold by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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