Quarterly report [Sections 13 or 15(d)]

Summary of Significant Accounting Policies - Narrative (Details)

v3.26.1
Summary of Significant Accounting Policies - Narrative (Details)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2025
USD ($)
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 18, 2025
right
Dec. 17, 2025
right
Class of Stock [Line Items]            
Accumulated deficit $ (660,229) $ (661,238)   $ (660,229)    
Cash and cash equivalents $ 8,490 7,160 $ 9,605 8,490    
Customer loyalty program, rewards points expiration period 13 months          
Deferred revenue $ 5,033 5,857   5,033    
Contract With Customer, Material Rights | right         3 2
Deferred Revenue            
Class of Stock [Line Items]            
Contract with customer, liability, revenue recognized   2,300 $ 2,700      
Deferred Revenue            
Class of Stock [Line Items]            
Deferred revenue 4,800 4,700   4,800    
Green Rewards            
Class of Stock [Line Items]            
Deferred revenue $ 200 $ 1,200   $ 200    
Cost of Goods and Service, Product and Service Benchmark | Supplier Concentration Risk | Five Suppliers            
Class of Stock [Line Items]            
Concentration risk, percentage   35.00% 35.00%      
Customer One | Accounts Receivable | Customer Concentration Risk            
Class of Stock [Line Items]            
Concentration risk, percentage       82.00%