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v3.25.2

Revenue - Additional Information (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2025 USD ($)
Revenues [Abstract] |
Transaction price | $ 16.1

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- Definition Transaction Price Recognized in Revenue Attributed from R and D Performance Obligations + References No definition available. + Details
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Namespace Prefix: | nams_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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