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Loans - Summary of Loans to Directors and Executive Officers (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Loans and Leases Receivable, Related Parties [Roll Forward] |  |
Beginning balance | $ 33,524 | $ 29,490
New loans | 3,462 | 9,921
Repayments | (4,804) | (5,598)
Retired director | 0 | (289)
Ending balance | $ 32,182 | $ 33,524

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- Definition Loans and Leases Receivables, Related Parties, Additions, Aggregated Over 60,000 Dollars + References No definition available. + Details
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- Definition Loans and Leases Receivables, Related Parties, Collections, Aggregated Over 60,000 Dollars + References No definition available. + Details
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Namespace Prefix: | fnlc_
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- Definition Loans and Leases Receivables, Related Parties, Retired Director, Aggregated Over 60,000 Dollars + References No definition available. + Details
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- Definition For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts which in aggregate exceed $60,000, due from related parties at the balance sheet date. + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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