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

No definition available.

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Data Type:	xbrli:monetaryItemType
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- Definition

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

+ References

No definition available.

+ Details

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

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

- Definition

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

+ References

+ Details

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

- 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

+ Details

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

- Details

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

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
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=28368275&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

+ Details

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Namespace Prefix:	us-gaap_
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BORROWINGS (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
BORROWINGS
Borrowings	$ 35,852	$ 35,925	$ 35,925
Federal Home Loan Bank fixed rate advances at September 30, 2013 with a weighted average rate of 1.79% maturing in 2014, 2016 and 2018
BORROWINGS
Borrowings	35,000	35,000	35,000
Interest rate on note (as a percent)	1.79%
Federal Home Loan Bank fixed rate advances at September 30, 2013 with a weighted average rate of 1.79% maturing in 2014, 2016 and 2018 \| Mortgage related and municipal securities
BORROWINGS
Securities pledged as collateral, amortized cost	8,424
Securities pledged as collateral, fair value	8,654
Federal Home Loan Bank fixed rate advances at September 30, 2013 with a weighted average rate of 1.79% maturing in 2014, 2016 and 2018 \| Federal Home Loan Bank stock
BORROWINGS
Stock owned and pledged as collateral	3,060
Federal Home Loan Bank fixed rate advances at September 30, 2013 with a weighted average rate of 1.79% maturing in 2014, 2016 and 2018 \| One to four family residential real estate
BORROWINGS
Loans pledged as collateral	41,769
USDA Rural Development, fixed-rate note payable, maturing August 24, 2024, interest payable at 1%
BORROWINGS
Borrowings	852	925	925
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	130
Demand deposit account pledged as collateral	$ 790