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LOAN PORTFOLIO - Consumer Credit Exposure (Parenthetical) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2018 | Dec. 31, 2017
Financing Receivable Recorded Investment [Line Items] |  |  |
Residential mortgage loans insured by FHA or guaranteed by the VA | $ 33,900 | $ 33,900 | $ 29,900
Period of residential mortgage loan that are no longer accruing interest | 1 year 3 months | 1 year 3 months | 1 year 3 months
Loans considered to be defaulted if borrower has failed to make payment for a period or more than the period |  | 2 months 29 days | 2 months 29 days
Loans held for sale | $ 65,739 | $ 65,739 | $ 32,980
Non Accrual [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Loans held for sale | $ 44,200 | $ 44,200 | $ 8,300

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- Definition Reflects the carrying amount of FHA/VA loans deemed to be questionable as to collection of interest and on which no interest is continuing to be recognized. + References No definition available. + Details
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Period Type: | instant

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- Definition Days delinquent before charge-off of credit cards. + References No definition available. + Details
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Namespace Prefix: | fbp_
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- Definition Period of residential mortgage loan that are no longer accruing interest. + References No definition available. + Details
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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. + References No definition available. + Details
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- Definition Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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- Details
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