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Accounting Policies - Revenue disaggregated by customer (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Revenue $ 35,622,000 $ 37,773,000
Supermarket    
Revenue 30,564,000 34,793,000
Wholesaler    
Revenue 4,591,000 2,521,000
Other    
Revenue $ 467,000 $ 459,000