Annual report pursuant to Section 13 and 15(d)

Organization and Summary of Significant Accounting Policies - Components of Inventories (Details)

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Organization and Summary of Significant Accounting Policies - Components of Inventories (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Organization and Summary of Significant Accounting Policies    
Raw materials and supplies $ 227,000 $ 170,000
Finished goods 66,000 158,000
Total inventories $ 293,000 $ 328,000