XML 107 R96.htm IDEA: XBRL DOCUMENT
v3.10.0.1

LOAN PORTFOLIO - Breakdown Between Accrual and Nonaccrual Status of TDRs (Parenthetical) (Detail) - USD ($) $ in Thousands | Sep. 30, 2018 | Jun. 30, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | --- | --- | --- | --- | ---
Financing Receivable Modifications [Line Items] |  |  |  |  |  |  |  |
Total TDR loans | $ 625,720 |  | $ 557,196 | $ 587,219 |  | $ 585,795 | $ 568,543 | $ 647,048
Non Accrual [Member] |  |  |  |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |  |  |  |
Total TDR loans | 114,874 | [1] |  | 212,524 | [2] |  |  |
Performing Financing Receivable [Member] | Non Accrual [Member] |  |  |  |  |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |  |  |  |  |
Total TDR loans | $ 20,700 |  |  | $ 88,600 |  |  |  |
[1] | Excludes a construction TDR loan held for sale of $27.0 million as of September 30, 2018.
[2] | Included in non-accrual loans are $88.6 million in loans that were performing under the terms of the restructuring agreement but are reported in non-accrual status until the restructured loans meet the criteria of sustained payment performance under the revised terms for reinstatement to accrual status and are deemed fully collectible.

X
- 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
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fbp_NonAccrualMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PerformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |