Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Narrative)

v3.19.2
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Working capital $ 12,500,000   $ 12,500,000    
Marketable debt securities, available for sale 4,685,000   4,685,000   $ 6,687,000
Unrealized gain (loss) on marketable securities 8,000 $ 68,000 23,000 $ 25,000  
Accumulated unrealized loss on marketable securities 1,000   1,000    
Adjustments to reduce inventory for excess or obsolete inventory 382,000   382,000   377,000
Inventory finished goods 614,000   614,000   158,000
Impairments or changes in useful lives        
Cash and cash equivalents 1,049,000   1,049,000   1,554,000
Bank balance 1,200,000   1,200,000    
Amount of bank balance covered by federal depository insurance 250,000   250,000    
Amount of bank balance uninsured 900,000   900,000    
Allowance for bad debt    
Net sales 1,651,000 3,186,000 3,969,000 6,594,000  
Provision for sales allowances     2,300   1,000
Estimated sales returns 138,000   138,000   181,000
Advertising and incentive promotion expenses 55,000 39,000 82,000 72,000  
Deferred revenue 302,000   $ 302,000    
Stock option exercisable period     7 years    
Research and development 95,000 87,000 $ 189,000 174,000  
Research and Development Expense [Member]          
Deferred revenue 302,000   302,000    
Cooperative Incentive [Member]          
Advertising and incentive promotion expenses     76,000   88,000
Contract Manufacturing [Member]          
Net sales 1,452,000 3,106,000 3,576,000 6,440,000  
Retail Customers [Member]          
Net sales 200,000 $ 80,000 $ 400,000 $ 200,000  
Furniture and Fixtures [Member]          
Property, plant and equipment, useful life     5 years    
shelf-life Inventory [Member]          
Inventory finished goods 113,000   $ 113,000   319,000
Raw material and work in process 269,000   269,000   58,000
TK Supplements [Member]          
Adjustments to reduce inventory for excess or obsolete inventory $ 307,000   $ 307,000   $ 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     1.99%    
Marketable Securities [Member] | Maximum [Member]          
Investment in securities term     3 years    
Interest rate     3.08%