Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Narrative)

v3.20.1
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Working capital $ 8,400    
Marketable debt securities, available for sale 840   $ 926
Unrealized gain (loss) on marketable securities 11 $ 15  
Accumulated unrealized income on marketable securities 9    
Adjustments to adjust inventory for excess, obsolete inventory or short-dated shelf-life inventory 12 10  
Impairments or changes in useful lives    
Cash and cash equivalents 697   434
Bank balance 800    
Amount of bank balance covered by federal depository insurance 300    
Amount of bank balance uninsured 500    
Allowance for bad debt  
Net sales 1,888 2,318  
Estimated sales returns, continuing operation 46   37
Advertising and incentive promotion expenses, continuing operation 47 27  
Estimated sales returns, discontinued operation     132
Deferred revenue $ 205   214
Stock issued price per share $ 0.0005    
Share-based compensation expense for the aggregate fair value of stock grants issued and vested stock options $ 198 196  
Research and development cost 59 94  
Cooperative Incentive [Member]      
Advertising and incentive promotion expenses, continuing operation     92
Advertising and incentive promotion expenses , discontinued operation     $ 76
Cooperative Incentive Promotion Costs [Member]      
Advertising and incentive promotion expenses , discontinued operation 69    
Contract Manufacturing [Member]      
Net sales 1,723 2,124  
Retail Dietary Supplement Product Customers [Member]      
Net sales $ 200 $ 200  
Furniture and Fixtures [Member]      
Property, plant and equipment, useful life 5 years    
Minimum [Member] | Building and Improvements [Member]      
Property, plant and equipment, useful life 10 years    
Minimum [Member] | Machinery and Equipment [Member]      
Property, plant and equipment, useful life 3 years    
Minimum [Member] | Computer Equipment and Software [Member]      
Property, plant and equipment, useful life 3 years    
Maximum [Member] | Building and Improvements [Member]      
Property, plant and equipment, useful life 39 years    
Maximum [Member] | Machinery and Equipment [Member]      
Property, plant and equipment, useful life 7 years    
Maximum [Member] | Computer Equipment and Software [Member]      
Property, plant and equipment, useful life 5 years    
Marketable Securities [Member] | Minimum [Member]      
Investment in securities term 1 year    
Interest rate 1.875%    
Marketable Securities [Member] | Maximum [Member]      
Investment in securities term 3 years    
Interest rate 2.75%