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Certificates of Deposit (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014 | Sep. 30, 2014
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Banking and Thrift [Abstract] |  |  |
Certificates of deposit less than $100,000 | $ 141,946 | $ 184,471 | $ 208,972
Certificates $100,000 to $250,000 | 204,707 | 221,892 | 210,042
Certificates $250,000 and over | 42,654 | 41,138 | 44,762
Total certificates of deposit | $ 389,307 | $ 447,501 | $ 463,776

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- Definition The aggregate amount of domestic or foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) that total to more than $250,000. + References No definition available. + Details
Name: | fnlc_TimeDeposits250000OrMore
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- Definition The aggregate amount of domestic or foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) that total to more than $100,000 but less than $250,000. + References No definition available. + Details
Name: | fnlc_TimeDepositsGreaterThan100000AndLessThan250000
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Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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- Definition Amount of deposits that cannot be withdrawn before a set date without penalty or for which notice of withdrawal is required. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition The aggregate amount of domestic or foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) that total to less than $100,000. + References No definition available. + Details
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