Loans and Asset Quality Information (Details Narrative) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Unamortized premiums on loans	$ 147	$ 601	$ 485
Loans held for sale not included in loan balances			30,000
Noncovered high risk loans targeted for sale to a third party			68,000
Loans written down			38,000
Accretion of loan discount	14,595		16,466
Percentage of loan discount accretion			80.00%
Payments exceeding carrying amount	62	0
Contractual balance of nonaccrual loans	75,500	67,900	64,400
Purchased Performing loans
Loan discount on loans	33,367
Purchased Nonperfoming Loans
Loan discount on loans	$ 13,286

The increase in the net discounted value of loans.

No definition available.

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- Definition

The contractual balance of nonaccrual loans.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

The amount of discount on nonimpaired purchased loans.

+ References

No definition available.

+ Details

Name:	FBP_LoanDiscount
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value of loans held for sale not included in loan balances.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

The amount of loans written down.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

The carrying value of noncovered high risk loans targeted for sale to a third party.

+ References

No definition available.

+ Details

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Namespace Prefix:	FBP_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

The amount of payments received in excess of the initial carrying amount of purchased impaired loans.

+ References

No definition available.

+ Details

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Namespace Prefix:	FBP_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Percentage of loan discount accretion that will reduce the indemnification asset.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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Period Type:	instant

- Definition

Reflects the cumulative amount of fees paid by borrowers, which relationship is not otherwise defined (such as commercial, consumer, or foreign), which have not yet been taken into income and unamortized costs incurred to originate loans and leases, not otherwise categorized (such as commercial, consumer, or foreign), unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans, not otherwise categorized (such as commercial, consumer, or foreign), that are being amortized into income as an adjustment to yield.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533

+ Details

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