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v3.19.1

Supplementary Balance Sheet Information (Details Textual) | 12 Months Ended
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Dec. 31, 2018
Supplementary Balance Sheet Information (Textual) |
Average rate of short-term deposit | 2.29%
Deposit maturity | Jun. 30, 2020
Deposit maturity rate | 1.80%

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- Definition Deposit maturity. + References No definition available. + Details
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Namespace Prefix: | mndo_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of deposit maturity rate. + References No definition available. + Details
Name: | mndo_DepositMaturityRate
Namespace Prefix: | mndo_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of short term average rate deposits. + References No definition available. + Details
Name: | mndo_ShortTermDepositsAverageRate
Namespace Prefix: | mndo_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | mndo_SupplementaryBalanceSheetInformationTextualAbstract
Namespace Prefix: | mndo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration