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Summary of Significant Accounting Policies (Details 2) - Premium debt conversion derivatives [Member] - USD ($) | 9 Months Ended | 12 Months Ended
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Sep. 30, 2018 | Dec. 31, 2017
Schedule of Premium debt conversion derivative [Abstract] |  |
Balance as of beginning of period | $ 462,174 | $ 137,650
Value assigned to the underlying derivatives in connection with convertible promissory and short-term notes | 218,052 | 342,486
Change in fair value of premium debt conversion derivatives | (371,831) | (17,962)
Balance as of end of period | $ 308,395 | $ 462,174

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- Definition Change in fair value of premium conversion derivative. + References No definition available. + Details
Name: | nmtc_ChangeInFairValueOfPremiumDebtConversionDerivativeAndRecognition
Namespace Prefix: | nmtc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Premium debt conversion derivative. + References No definition available. + Details
Name: | nmtc_PremiumDebtConversionDerivative
Namespace Prefix: | nmtc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- Definition Value assigned to the underlying derivative in connection with convertible notes. + References No definition available. + Details
Name: | nmtc_ValueAssignedToUnderlyingDerivativeInConnectionWithConvertibleNotes
Namespace Prefix: | nmtc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_DebtInstrumentAxis=nmtc_DebtConversionDerivativeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |