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Subsequent Event (Details) $ in Millions	Mar. 31, 2019 USD ($)
Subsequent Event [Member]
Subsequent Event (Textual)
Declared dividend to its shareholders	$ 5.0

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- References

No definition available.

+ Details

Name:	mndo_SubsequentEventTextualAbstract
Namespace Prefix:	mndo_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Amount of cumulative cash dividends distributed to shareholders.

+ References

No definition available.

+ Details

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

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- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: