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

Transaction Price Recognized in Revenue Attributed from R and D Performance Obligations

No definition available.

Name:	nams_TransactionPriceRecognizedInRevenueAttributedFromRAndDPerformanceObligations
Namespace Prefix:	nams_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration