LOAN PORTFOLIO - Contractually Required Principal and Interest Cash Flows Expected to be Collected and Fair Value at Acquisition Related to Loans Acquired (Detail) (USD $)	0 Months Ended
May 30, 2012	May 30, 2014
Financing Receivable Impaired [Line Items]
Contractually outstanding principal and interest at acquisition		$ 275,842,000
Less: Nonaccretable difference		(86,252,000)
Cash flows expected to be collected at acquisition		189,590,000
Less: Accretable yield		(86,759,000)
Fair value of loans acquired		102,831,000
Payment To Acquire Credit Card Portfolio	$ 406,000,000fbp_PaymentToAcquireCreditCardPortfolio

Credit card portfolio purchased during the period.

No definition available.

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- Definition

Fair value at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 15

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

+ Details

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- Definition

The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans with deteriorating of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

No definition available.

+ Details

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- Definition

The amount of the loan's contractually required payments receivable in excess of the amount of its cash flows expected to be collected. This relates to loans with deteriorating of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Amount of cash flows expected to be collected at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

+ References

+ Details

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- Definition

Amount of contractually required payments receivable at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

+ References

+ Details

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- Details

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