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Revenue - Summary of Company's Deferred Revenue (Details) $ in Thousands | 6 Months Ended
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Jun. 30, 2026 USD ($)
Deferred Revenue [Abstract] |
Beginning balance on January 1, 2026 | $ 3,987
Addition of deferred revenue during the period | 2,797
Adjustment to deferred revenue during the period | (286)
Revenue recognized during the period | (3,701)
Ending balance on June 30, 2026 | $ 2,797

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- Definition Addition of Deferred Revenue + 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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- Definition Adjustment to deferred revenue. + 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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- Definition Deferred Revenue Recognized + References No definition available. + Details
Name: | nams_DeferredRevenueRecognized
Namespace Prefix: | nams_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(26)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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