Quarterly report [Sections 13 or 15(d)]

Business and Summary of Significant Accounting Policies - Narratives (Details)

v3.25.2
Business and Summary of Significant Accounting Policies - Narratives (Details)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Apr. 04, 2024
Apr. 30, 2024
Jun. 30, 2025
USD ($)
customer
Jun. 30, 2024
USD ($)
customer
Jun. 30, 2025
USD ($)
customer
segment
shares
Jun. 30, 2024
USD ($)
customer
shares
Dec. 31, 2024
USD ($)
customer
Business and Summary of Significant Accounting Policies              
Reverse stock split ratio 0.0067 0.0067          
Allowance for credit losses     $ 0   $ 0   $ 0
Allowance for credit losses deemed     0   0   0
Deferred offering costs capitalized     0   $ 0   0
Warranty period of company products (in years)         1 year    
Number of operating segments | segment         1    
Practical expedient applied for remaining performance obligation         false    
Advertising costs     $ 29,000 $ 117,000 $ 175,000 $ 264,000  
Interest and penalties         0   0
Revenue recognized         $ 53,000   $ 53,000
Maximum              
Business and Summary of Significant Accounting Policies              
Estimated useful life of property and equipment (in years)     5 years   5 years    
Minimum              
Business and Summary of Significant Accounting Policies              
Estimated useful life of property and equipment (in years)     2 years   2 years    
Warrant              
Business and Summary of Significant Accounting Policies              
Antidilutive securities excluded from computation of earnings per share (in shares) | shares         31,232,173 9,793,531  
Restricted stock              
Business and Summary of Significant Accounting Policies              
Antidilutive securities excluded from computation of earnings per share (in shares) | shares         564,183 260,441  
Restricted stock units              
Business and Summary of Significant Accounting Policies              
Antidilutive securities excluded from computation of earnings per share (in shares) | shares         1,200,000 16  
Restricted stock awards              
Business and Summary of Significant Accounting Policies              
Antidilutive securities excluded from computation of earnings per share (in shares) | shares         10,108,368    
Convertible Preferred Stock              
Business and Summary of Significant Accounting Policies              
Antidilutive securities excluded from computation of earnings per share (in shares) | shares         12 14  
Series A Preferred Stock              
Business and Summary of Significant Accounting Policies              
Dividend rate (in %)         8.00%    
Accounts Receivable | Customer Concentration Risk              
Business and Summary of Significant Accounting Policies              
Number of customers | customer     2   2   3
Accounts Receivable | Customer Concentration Risk | Customer 1              
Business and Summary of Significant Accounting Policies              
Concentration risk percentage (in %)         25.00%   68.00%
Accounts Receivable | Customer Concentration Risk | Customer 2              
Business and Summary of Significant Accounting Policies              
Concentration risk percentage (in %)         13.00%   12.00%
Accounts Receivable | Customer Concentration Risk | Customer 3              
Business and Summary of Significant Accounting Policies              
Concentration risk percentage (in %)             11.00%
Net Revenue | Customer Concentration Risk              
Business and Summary of Significant Accounting Policies              
Number of customers | customer       4 2 4  
Net Revenue | Customer Concentration Risk | Customer 1              
Business and Summary of Significant Accounting Policies              
Concentration risk percentage (in %)     18.00% 33.00% 13.00% 28.00%  
Net Revenue | Customer Concentration Risk | Customer 2              
Business and Summary of Significant Accounting Policies              
Concentration risk percentage (in %)     10.00% 27.00% 10.00% 27.00%  
Net Revenue | Customer Concentration Risk | Customer 3              
Business and Summary of Significant Accounting Policies              
Concentration risk percentage (in %)       20.00%   19.00%  
Net Revenue | Customer Concentration Risk | Customer 4              
Business and Summary of Significant Accounting Policies              
Concentration risk percentage (in %)       11.00%   10.00%