Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Narrative)

v3.19.3
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Working capital $ 12,100,000   $ 12,100,000    
Marketable debt securities, available for sale 3,760,000   3,760,000   $ 6,687,000
Unrealized gain (loss) on marketable securities (5,000) $ 28,000 18,000 $ 54,000  
Accumulated unrealized loss on marketable securities 6,000   6,000    
Adjustments to reduce inventory for excess or obsolete inventory 344,000   344,000   377,000
Inventory finished goods 299,000   299,000   158,000
Impairments or changes in useful lives      
Cash and cash equivalents 968,000   968,000   1,554,000
Bank balance 1,100,000   1,100,000    
Amount of bank balance covered by federal depository insurance 250,000   250,000    
Amount of bank balance uninsured 800,000   800,000    
Allowance for bad debt    
Net sales 2,766,000 2,439,000 6,735,000 9,033,000  
Provision for sales allowances     500   1,000
Estimated sales returns 132,000   132,000   181,000
Advertising and incentive promotion expenses 270,000 14,000 352,000 51,000  
Deferred revenue 247,000   $ 247,000    
Stock option exercisable period     7 years    
Research and development 57,000 144,000 $ 246,000 319,000  
Research and Development Expense [Member]          
Deferred revenue 247,000   247,000    
Cooperative Incentive [Member]          
Advertising and incentive promotion expenses     76,000   88,000
Contract Manufacturing [Member]          
Net sales 2,517,000 2,324,000 6,093,000 8,764,000  
Retail Customers [Member]          
Net sales 200,000 $ 100,000 $ 600,000 $ 300,000  
Furniture and Fixtures [Member]          
Property, plant and equipment, useful life     5 years    
Shelf-life Inventory [Member]          
Inventory finished goods 78,000   $ 78,000   319,000
Raw material and work in process 266,000   266,000   58,000
TK Supplements [Member]          
Adjustments to reduce inventory for excess or obsolete inventory $ 305,000   $ 305,000   $ 270,000
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     1.91%    
Marketable Securities [Member] | Maximum [Member]          
Investment in securities term     3 years    
Interest rate     4.70%