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Mortgage Servicing Rights - Schedule of Mortgage Servicing Rights (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018
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Transfers and Servicing [Abstract] |  |  |
Mortgage servicing rights | $ 5,776 | $ 5,718 | $ 5,489
Accumulated amortization | (4,420) | (4,364) | (4,209)
Impairment reserve | 0 | 0 | 0
Total servicing asset at fair value | $ 1,356 | $ 1,354 | $ 1,280

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- Definition The cumulative amount of amortization for mortgage servicing rights that has been recognized in the income statement. + References No definition available. + Details
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Namespace Prefix: | fnlc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Gross amount, as of the balance sheet date, of mortgage servicing rights. + References No definition available. + Details
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Namespace Prefix: | fnlc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition A reserve for the amount of expected decrease in the value of mortgage servicing rights which cannot be physically measured. + References No definition available. + Details
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- Definition Fair value of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122739-111746 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7516967&loc=d3e66267-113978 + Details
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- References No definition available. + Details
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