Name:	fbp_FhaVaLoansNoLongerAccruingInterest
Namespace Prefix:	fbp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Days delinquent before charge-off of credit cards.

No definition available.

Name:	fbp_LoansConsideredToBeDefaultedIfBorrowerHasFailedToMakePaymentForPeriodOrMoreThanPeriod
Namespace Prefix:	fbp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Period of residential mortgage loan that are no longer accruing interest.

No definition available.

Name:	fbp_PeriodOfResidentialMortgageLoanThatAreNoLongerAccruingInterest
Namespace Prefix:	fbp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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.

No definition available.

Name:	us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522