LOANS - TROUBLED DEBT RESTRUCTURING (Details) $ in Thousands	6 Months Ended
Jun. 30, 2019 USD ($) loan item	Jun. 30, 2018 loan
LOANS
Number of consecutive timely payments before being considered return to accruing status \| item	6
Number of TDR’s \| loan	3	0
Restructed loan pre-modification	$ 450
restructured loans post-modification	$ 437

Number of consecutive timely payments before the Company would consider a return of a restructured loan to accruing status in accordance with FDIC guidelines regarding restoration of credits to accrual status.

No definition available.

+ Details

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Namespace Prefix:	mfnc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

+ Details

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

- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

+ Details

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

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration