Annual report [Section 13 and 15(d), not S-K Item 405]

Summary of Significant Accounting Policies - Narrative (Details)

v3.25.4
Summary of Significant Accounting Policies - Narrative (Details)
 1 Months Ended 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 18, 2025
right
Dec. 17, 2025
right
Dec. 31, 2023
USD ($)
Class of Stock [Line Items]            
Accumulated deficit $ 660,229,000 $ 660,229,000 $ 648,513,000      
Cash and cash equivalents $ 8,490,000 8,490,000 19,627,000      
Customer loyalty program, rewards points expiration period 13 months          
Deferred revenue $ 5,033,000 5,033,000 6,340,000      
Number of material rights included in VIP membership | right       3 2  
Green Rewards            
Class of Stock [Line Items]            
Deferred revenue 200,000 200,000        
Deferred Revenue            
Class of Stock [Line Items]            
Contract with customer, liability, revenue recognized   6,300,000 7,200,000      
Other Current Liabilities            
Class of Stock [Line Items]            
Contract with customer, liability, revenue recognized   100,000 100,000      
Deferred Revenue            
Class of Stock [Line Items]            
Deferred revenue 4,800,000 4,800,000 6,300,000     $ 7,200,000
Other Current Liabilities            
Class of Stock [Line Items]            
Deferred revenue $ 100,000 $ 100,000 $ 0     $ 0
Software and Software Development Costs            
Class of Stock [Line Items]            
Property, plant and equipment, useful life (in years) 4 years 4 years        
Accounts Receivable | Customer Concentration Risk | Customer One            
Class of Stock [Line Items]            
Concentration risk, percentage   82.00%        
Cost of Goods and Service, Product and Service Benchmark | Supplier Concentration Risk | Five Suppliers            
Class of Stock [Line Items]            
Concentration risk, percentage   35.00% 40.00%