BORROWINGS (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
BORROWINGS
Borrowings	$ 35,925	$ 35,997
Federal Home Loan Bank fixed rate advances at December 31, 2012 with a weighted average rate of 1.82% maturing in 2013, 2014 and 2016
BORROWINGS
Borrowings	35,000	35,000
Interest rate on note (as a percent)	1.82%
Federal Home Loan Bank fixed rate advances at December 31, 2012 with a weighted average rate of 1.82% maturing in 2013, 2014 and 2016 \| Mortgage related and municipal securities
BORROWINGS
Securities pledged as collateral, amortized cost	6,770
Securities pledged as collateral, fair value	7,136
Federal Home Loan Bank fixed rate advances at December 31, 2012 with a weighted average rate of 1.82% maturing in 2013, 2014 and 2016 \| Federal Home Loan Bank stock
BORROWINGS
Stock owned and pledged as collateral	3,060
Federal Home Loan Bank fixed rate advances at December 31, 2012 with a weighted average rate of 1.82% maturing in 2013, 2014 and 2016 \| One to four family residential real estate
BORROWINGS
Loans pledged as collateral	42,231
USDA Rural Development, fixed-rate note payable, maturing August 24, 2024, interest payable at 1%
BORROWINGS
Borrowings	925	997
Interest rate on note (as a percent)	1.00%
USDA Rural Development, fixed-rate note payable, maturing August 24, 2024, interest payable at 1% \| First Rural Relending
BORROWINGS
Loans pledged as collateral	152
Demand deposit account pledged as collateral	$ 857

Represents the cost of available-for-sale securities that serve as collateral for borrowings.

No definition available.

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Namespace Prefix:	mfnc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the demand deposit accounts that serve as collateral for borrowings.

+ References

No definition available.

+ Details

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- Definition

Cost of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at cost and pledged to counterparties as collateral for financing transactions.

+ References

No definition available.

+ Details

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- Definition

The fair value of available-for-sale securities that serve as collateral for borrowings.

+ References

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

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 01-6

-Paragraph 13

-Subparagraph i

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5086-111524

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- Definition

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.13,16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Details

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Balance Type:	na
Period Type:	duration

- Definition

Reflects the calculation as of the balance sheet date of the average interest rate weighted by the amount of debt outstanding by type or by instrument at that time.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5086-111524

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6467456&loc=d3e113888-111728

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 140

-Paragraph 15

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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