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Borrowings and Borrowings Availability (Schedule of debt) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Borrowings	$ 186,394,000	$ 116,394,000
Weighted average interest rate	1.14%	1.05%
FHLB Term Note 1 [Member]
Maturity date	Jan. 19, 2016	Jan. 29, 2015
Borrowings	$ 30,000,000	$ 50,000,000
Effective percentage	0.41%	0.20%
FHLB Term Note 2 [Member]
Maturity date	Jan. 29, 2016	Sep. 30, 2015
Borrowings	$ 50,000,000	$ 20,000,000
Effective percentage	0.38%	0.44%
FHLB Term Note 3 [Member]
Maturity date	Dec. 27, 2016
Borrowings	$ 20,000,000
Effective percentage	0.76%
FHLB Term Note 4 [Member]
Maturity date	Dec. 26, 2017
Borrowings	$ 20,000,000
Effective percentage	1.19%
FHLB Term Note 5 [Member]
Maturity date	Dec. 24, 2018
Borrowings	$ 20,000,000
Effective percentage	1.57%
Trust Preferred Securities 1 [Member]
Maturity date	Jan. 23, 2034	Jan. 23, 2034
Issuer	Issued by First Bancorp Capital Trusts II and III, which are unconsolidated subsidiaries of the Company	Issued by First Bancorp Capital Trusts II and III, which are unconsolidated subsidiaries of the Company
Earliest date of call feature	Jan. 23, 2009	Jan. 23, 2009
Borrowings	$ 20,620,000	$ 20,620,000
Effective percentage	3.02%	2.96%
Variable rate basis spread	2.70%	2.70%
Trust Preferred Securities 2 [Member]
Maturity date	Jun. 15, 2036	Jun. 15, 2036
Issuer	Issued by First Bancorp Capital Trust IV, an unconsolidated subsidiary of the Company	Issued by First Bancorp Capital Trust IV, an unconsolidated subsidiary of the Company
Earliest date of call feature	Jun. 15, 2011	Jun. 15, 2011
Borrowings	$ 25,774,000	$ 25,774,000
Effective percentage	1.90%	1.65%
Variable rate basis spread	1.39%	1.39%

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Earliest date before maturity when the issuer can call the outstanding debt instrument for repayment or conversion to equity, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
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-Publisher SEC
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-Number 210
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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Identification of the contractual issuer of the debt instrument (for example, a subsidiary of the reporting entity).

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
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Weighted average interest rate of debt outstanding.

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The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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