XML 105 R88.htm IDEA: XBRL DOCUMENT v3.6.0.2

Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
401(k) Plan [Member]
Deferral rate	5.00%
Percent of annual salary employees may contribute	15.00%
Percent matched by company up to 3 percent of employee salary	100.00%
Percent matched by company 3-5 percent of employee salary	50.00%
Matching contributions	$ 1,600	$ 1,400	$ 1,400
Pension Plan [Member]
Accumulated benefit obligation	$ 36,840	$ 36,164	35,615
Expected average annual rate of return, minimum	7.00%	7.00%
Expected average annual rate of return, maximum	10.00%	10.00%
Pension Plan [Member] | Fixed Income [Member]
Pension plans allocated assets (percentage)	25.00%	25.00%
Pension Plan [Member] | Equity Securities1 [Member]
Pension plans allocated assets (percentage)	75.00%	75.00%
SERP [Member]
Accumulated benefit obligation	$ 5,910	$ 5,778	$ 5,216

X

- Definition

The automatic rate of deferral for employees enrolled in a defined contribution plan.

+ References

No definition available.

+ Details

Name:	fbp_DeferralRate
Namespace Prefix:	fbp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The maximum expected average annual rate of return on investments.

+ References

No definition available.

+ Details

Name:	fbp_ExpectedAverageAnnualRateOfReturnMaximum
Namespace Prefix:	fbp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The minimum expected average annual rate of return on investments.

+ References

No definition available.

+ Details

Name:	fbp_ExpectedAverageAnnualRateOfReturnMinimum
Namespace Prefix:	fbp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount matched by the company under a defined contribution plan.

+ References

No definition available.

+ Details

Name:	fbp_MatchingContributions
Namespace Prefix:	fbp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The percent matched by company in the range of 3 to 5 percent of employee salary.

+ References

No definition available.

+ Details

Name:	fbp_PercentMatchedByCompany305PercentOfEmployeeSalary
Namespace Prefix:	fbp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The percent matched by company up to 3 percent of employee salary for the defined contribution plan.

+ References

No definition available.

+ Details

Name:	fbp_PercentMatchedByCompanyUpTo3PercentOfEmployeeSalary
Namespace Prefix:	fbp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The percentage amount of annual salary employees may contribute to the defined contribution plan.

+ References

No definition available.

+ Details

Name:	fbp_PercentOfAnnualSalaryEmployeesMayContribute
Namespace Prefix:	fbp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accumulated Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6503844

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2446-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=fbp_Plan401kMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=fbp_PensionPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_FixedIncomeInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=fbp_EquitySecurities1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=fbp_SerpPlanCurrentYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: