XML 40 R28.htm IDEA: XBRL DOCUMENT v3.26.1
Significant Accounting Policies (Details)
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
segment
Jun. 30, 2025
USD ($)
Product Information [Line Items]        
Number of operating segments | segment     1  
Number of reportable segments | segment     1  
Revenues $ 190,000 $ 0 $ 190,000 $ 0
Grant liability, current 200,000   200,000  
Accounts receivable, allowance for credit loss, current 0   0  
Accounts receivable, write-offs 0   0  
Inventory for long-term contracts or programs, research and development expense, included in inventory     500,000  
Inventory 600,000   600,000  
Balance Sheet Location [Axis]: us-gaap:PrepaidExpenseAndOtherAssetsCurrent        
Product Information [Line Items]        
Accounts receivable, after allowance for credit loss, current (less than) 100,000   100,000  
Balance Sheet Location [Axis]: naut:AccruedLiabilitiesAndOtherLiabilitiesCurrent        
Product Information [Line Items]        
Grant liability, current 400,000   400,000  
Grant revenue        
Product Information [Line Items]        
Revenues $ 180,000 $ 0 $ 180,000 $ 0