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Summary of Significant Accounting Policies - Narrative (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 2 Months Ended 12 Months Ended
Sep. 30, 2021
USD ($)
$ / shares
shares
Jun. 30, 2021
USD ($)
$ / shares
Aug. 31, 2020
USD ($)
Dec. 31, 2021
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
May 31, 2021
$ / shares
Subsidiary, Sale of Stock [Line Items]            
Reverse stock split, conversion ratio 0.2105          
Payments for underwriting discount and commissions | $ $ 13,200          
Payments of stock issuance costs | $ $ 2,900 $ 290 $ 496 $ 16,121    
Convertible preferred stock, shares, number of shares issued upon conversion (in shares) 29,912,264          
Conversion of redeemable convertible preferred stock to common stock upon initial public offering | $       $ 329,534 $ 9,520  
Common stock, par value (in dollars per share) | $ / shares $ 0.00001 $ 0.00001   $ 0.00001 $ 0.00001 $ 0.001
Preferred Stock, shares authorized (in shares) 10,000,000       0  
Common stock, shares authorized (in shares) 300,000,000       40,000,000  
Preferred Stock, par value (in dollars per share) | $ / shares $ 0.00001          
Issuance upon exercise of warrants (in shares)       62,000 651,000  
Impairment of long-lived assets | $       $ 0 $ 0  
Deferred offering costs | $       $ 0 $ 0  
Product warranty period (in years)       1 year    
Service agreement, amortization period       1 year    
Series E, Redeemable Convertible Preferred Stock            
Subsidiary, Sale of Stock [Line Items]            
Warrants outstanding (in shares)       0 72,000  
Additional Paid-in Capital            
Subsidiary, Sale of Stock [Line Items]            
Conversion of redeemable convertible preferred stock to common stock upon initial public offering | $ $ 329,500     $ 329,534 $ 9,520  
Common stock warrants | Series E, Redeemable Convertible Preferred Stock            
Subsidiary, Sale of Stock [Line Items]            
Issuance upon exercise of warrants (in shares) 62,454     62,454 0  
Warrants outstanding (in shares)       0    
Minimum            
Subsidiary, Sale of Stock [Line Items]            
Useful life (in years)       3 years    
Lessor, operating lease term (in months)       3 months    
Minimum | AquaBeam Robotic Systems            
Subsidiary, Sale of Stock [Line Items]            
Lessor, operating lease term (in months)       3 months    
Maximum            
Subsidiary, Sale of Stock [Line Items]            
Useful life (in years)       5 years    
Lessor, operating lease term (in months)       12 months    
Maximum | AquaBeam Robotic Systems            
Subsidiary, Sale of Stock [Line Items]            
Lessor, operating lease term (in months)       12 months    
Common Stock            
Subsidiary, Sale of Stock [Line Items]            
Share price (in dollars per share) | $ / shares $ 25.00          
Common Stock | IPO            
Subsidiary, Sale of Stock [Line Items]            
Sale of stock, number of shares issued in transaction (in shares) 6,556,000          
Sale of stock, consideration received on transaction | $ $ 172,400          
Common Stock | Over-Allotment Option            
Subsidiary, Sale of Stock [Line Items]            
Sale of stock, number of shares issued in transaction (in shares) 983,400