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Subsequent Events (Details)
3 Months Ended 6 Months Ended
Jul. 10, 2023
USD ($)
$ / shares
shares
Jul. 05, 2023
USD ($)
$ / shares
shares
Jun. 30, 2023
shares
Jun. 30, 2022
shares
Jun. 30, 2023
shares
Jun. 30, 2022
shares
Dec. 31, 2022
shares
May 30, 2022
$ / shares
shares
Subsequent Event [Line Items]                
Common shares, shares outstanding (in shares)     16,795,673 9,407,296 16,795,673 9,407,296 12,163,673  
PIPE Purchase Agreement Pre-Funded Warrant                
Subsequent Event [Line Items]                
Warrants exercised (in shares)     4,118,000 0 4,507,000 0    
Exercise price of warrant (in dollars per share) | $ / shares               $ 0.0001
Number of shares of common stock for which warrant is exercisable (in shares)               1,267,897
Subsequent event                
Subsequent Event [Line Items]                
Common shares, shares outstanding (in shares) 28,489,663              
Subsequent event | Evoqua Water Technologies LLC                
Subsequent Event [Line Items]                
Cash paid | $ $ 11,000,000              
Milestone payments | $ $ 2,500,000              
Subsequent event | PIPE Purchase Agreement Pre-Funded Warrant                
Subsequent Event [Line Items]                
Warrants exercised (in shares)   1,793,000            
Exercise price of warrant (in dollars per share) | $ / shares   $ 0.0001            
Gross proceeds | $   $ 179            
Subsequent event | Armistice Warrant Agreement                
Subsequent Event [Line Items]                
Exercise price of warrant (in dollars per share) | $ / shares $ 1.39              
Gross proceeds | $ $ 13,800,000              
Number of shares of common stock for which warrant is exercisable (in shares) 9,900,990              
Subsequent event | Armistice Reload Warrant Agreement                
Subsequent Event [Line Items]                
Exercise price of warrant (in dollars per share) | $ / shares $ 5.13              
Number of shares of common stock for which warrant is exercisable (in shares) 3,750,000              
Warrant expiration period 54 months              
Ownership limitation percentage 0.0999              
Subsequent event | Letter Agreement                
Subsequent Event [Line Items]                
Period after issuance, shares cannot be sold 45 days              
Minimum purchase price (dollars per share) | $ / shares $ 6.25              
Extended expiration date 1 year