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Schedule of Inventories (Details) - USD ($)
Mar. 31, 2023
Dec. 31, 2022
Inventory Disclosure [Abstract]    
Raw materials $ 1,374,000 $ 1,457,000
Work in process 2,631,000 2,513,000
Finished goods 3,939,000 4,355,000
Total inventories $ 7,944,000 $ 8,325,000