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Summary of Significant Accounting Policies (Details) - Schedule of computation of diluted net loss per share - shares | 12 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020
Schedule of computation of diluted net loss per share [Abstract] |  |
Warrants | 7,503,808 | 3,390,320
Stock options | 1,122,560 | 492,842
Restricted stock units | 11,384 | 26,698
Unissued vested restricted stock units | 1,148 | 2,063
Convertible notes |  | 277,618

X
- Definition It represent conversion of convertible notes not included in basic EPS. + References No definition available. + Details
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Namespace Prefix: | nmtc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition This relates to restricted stock units not included in basic EPS. + References No definition available. + Details
Name: | nmtc_RestrictedStockUnit
Namespace Prefix: | nmtc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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

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- Definition This relates to stock options not included in basic EPS. + References No definition available. + Details
Name: | nmtc_StockOptions
Namespace Prefix: | nmtc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition This relates to restricted stock awards not included in basic EPS. + References No definition available. + Details
Name: | nmtc_UnissuedVestedRestrictedStockUnits
Namespace Prefix: | nmtc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition This relates to warrants not included in basic EPS. + References No definition available. + Details
Name: | nmtc_Warrantshares
Namespace Prefix: | nmtc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration