LOANS (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Impaired Loans
Number of days past due to be considered as nonperforming loans	90 days
Non performing loans	$ 2,978mfnc_NonPerformingLoans
Accretion	(604)
Average investment
Total	12,835	1,745	3,354
Related Valuation Reserve	2,107	420	720
Interest Income on Accrual Basis
Total	72	24	130
Nonaccrual Basis
Recorded investment
Total	11,801	1,491	3,939
Accrual Basis
Recorded investment
Total	6,507		10,312
Commercial real estate loans
Average investment
With no valuation reserve	4,888	322	532
With a valuation reserve	379	176	229
Total	5,267	498	761
Related Valuation Reserve	570	104	227
Interest Income on Accrual Basis
With no valuation reserve	16	4	7
With a valuation reserve	5	4	18
Total	21	8	25
Commercial real estate loans \| Nonaccrual Basis
Recorded investment
With no valuation reserve	2,248	279	632
With a valuation reserve	170	176	227
Total	2,418	455	859
Commercial real estate loans \| Accrual Basis
Recorded investment
With no valuation reserve	3,537		5,352
Total	3,537		5,352
Commercial, financial, and agricultural
Average investment
With no valuation reserve	200	183	685
With a valuation reserve	2,327	597	1,109
Total	2,527	780	1,794
Related Valuation Reserve	1,517	271	484
Interest Income on Accrual Basis
With no valuation reserve	1	2	27
With a valuation reserve	19	7	45
Total	20	9	72
Commercial, financial, and agricultural \| Nonaccrual Basis
Recorded investment
With no valuation reserve	72	142	74
With a valuation reserve	6,926	588	774
Total	6,998	730	848
Commercial, financial, and agricultural \| Accrual Basis
Recorded investment
With no valuation reserve	128		702
Total	128		702
Commercial construction
Average investment
With no valuation reserve	367		11
Total	367		11
Interest Income on Accrual Basis
With no valuation reserve	4
Total	4
Commercial construction \| Nonaccrual Basis
Recorded investment
With no valuation reserve	266
Total	266
Commercial construction \| Accrual Basis
Recorded investment
With no valuation reserve	110		158
Total	110		158
One to four family residential real estate
Average investment
With no valuation reserve	4,635	235	656
With a valuation reserve	15	215	116
Total	4,650	450	772
Related Valuation Reserve	11	44	9
Interest Income on Accrual Basis
With no valuation reserve	25	3	25
With a valuation reserve	2	4	7
Total	27	7	32
One to four family residential real estate \| Nonaccrual Basis
Recorded investment
With no valuation reserve	1,950	67	1,844
With a valuation reserve	117	232	114
Total	2,067	299	1,958
One to four family residential real estate \| Accrual Basis
Recorded investment
With no valuation reserve	2,727		3,877
Total	2,727		3,877
Consumer construction
Average investment
With no valuation reserve	24		15
Total	24		15
Consumer construction \| Nonaccrual Basis
Recorded investment
With no valuation reserve	23		274
Total	23		274
Consumer construction \| Accrual Basis
Recorded investment
With no valuation reserve			215
Total			215
Consumer
Average investment
With no valuation reserve		9	1
With a valuation reserve		8
Total		17	1
Related Valuation Reserve	9	1
Interest Income on Accrual Basis
With no valuation reserve			1
Total			1
Consumer \| Nonaccrual Basis
Recorded investment
With no valuation reserve	29
With a valuation reserve		7
Total	29	7
Consumer \| Accrual Basis
Recorded investment
With no valuation reserve	5		8
Total	$ 5		$ 8

Number of days past due to be considered as nonperforming loans.

No definition available.

Name:	mfnc_FinancingReceivableNumberOfDaysPastDueToBeNonperforming
Namespace Prefix:	mfnc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the information pertaining to non performing loans.

+ References

No definition available.

+ Details

Name:	mfnc_NonPerformingLoans
Namespace Prefix:	mfnc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of decrease from accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not 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)(2)

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

+ Details

Name:	us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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

- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5258-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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

- Definition

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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

- Definition

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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

- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

+ Details

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

- Definition

Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mfnc_CommercialFinancialAndAgriculturalLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mfnc_ConsumerConstructionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mfnc_OneToFourFamilyResidentialRealEstateLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=mfnc_AccruingStatusMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=mfnc_NonaccrualStatusMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: