v3.26.1
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Product Information [Line Items]      
Cumulative net losses $ 589,229,000   $ 583,368,000
Restricted cash  
Short-term investments  
Expected credit loss on investments or accrued interest, description The Company did not have any material expected credit losses on investments or material expected credit losses on accrued interest related to investments during the three months ended March 31, 2026, or year ended December 31, 2025.    
Remaining performance obligations $ 10,000,000.0    
Contract with customer liability revenue recognized 2,500,000 $ 2,200,000  
Capitalized contract cost $ 200,000   100,000
Expected dividend rate 0.00%    
Expected volatility 75.00%    
Expected term 6 years 3 months    
Series A Convertible Preferred Stock [Member]      
Product Information [Line Items]      
Antidilutive securities 50,755,686    
Stock Options and Stock Appreciation Rights [Member]      
Product Information [Line Items]      
Antidilutive securities 4,102,414    
Weighted average exercise price $ 3.48    
Restricted Stock [Member]      
Product Information [Line Items]      
Antidilutive securities 2,587,321    
2021 CEO Performance Award Unit Grant [Member]      
Product Information [Line Items]      
Antidilutive securities 13,000,000    
Unearned Restricted Shares [Member]      
Product Information [Line Items]      
Antidilutive securities 0    
Revenue From System Delivery and Installation [Member] | Product Concentration Risk [Member]      
Product Information [Line Items]      
Concentration risk percentage 21.00% 26.00%  
Disposable Revenue [Member] | Product Concentration Risk [Member]      
Product Information [Line Items]      
Concentration risk percentage 37.00% 39.00%  
Other Recurring Revenue [Member] | Product Concentration Risk [Member]      
Product Information [Line Items]      
Concentration risk percentage 42.00% 35.00%  
Systems [Member]      
Product Information [Line Items]      
Warranty costs $ 100,000 $ 100,000  
Royalty [Member]      
Product Information [Line Items]      
Royalty revenue 0 $ 0  
Location, Statement of Financial Position, Balance [Axis]: STXS:OtherCurrentAssetsMember | Maximum [Member]      
Product Information [Line Items]      
Accrued interest receivable on investments $ 100,000   $ 100,000