Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Narrative)

v3.19.1
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Working capital $ 13,300    
Marketable debt securities, available for sale 4,229   $ 6,687
Unrealized gain (loss) on marketable securities 15 $ (43)  
Accumulated unrealized loss on marketable securities 9    
Adjustments to reduce inventory for excess or obsolete inventory 372   377
Inventory finished goods 272   158
Impairments charges    
Cash and cash equivalents 2,450   1,554
Bank balance 2,600    
Amount of bank balance covered by federal depository insurance 250    
Amount of bank balance uninsured 2,300    
Allowance for bad debt  
Net sales 2,318 3,407  
Provision for sales allowances 4   1
Estimated sales returns 154   181
Advertising and incentive promotion expenses 27 5  
Deferred revenue $ 119,343    
Stock issued price per share $ 0.0005    
Stock option exercisable period 7 years    
Research and development $ 94 87  
Cooperative Incentive [Member]      
Advertising and incentive promotion expenses 78   88
Contract Manufacturing [Member]      
Net sales 2,124 3,300  
Provision for sales allowances    
Retail Customers [Member]      
Net sales $ 200 $ 77  
Furniture and Fixtures [Member]      
Property, plant and equipment, useful life 5 years    
shelf-life Inventory [Member]      
Inventory finished goods $ 128   319
Raw material and work in process 244   28
TK Supplements [Member]      
Adjustments to reduce inventory for excess or obsolete inventory $ 267   $ 270
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 1.23%    
Marketable Securities [Member] | Maximum [Member]      
Investment in securities term 3 years    
Interest rate 3.08%