Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Narrative)

v3.8.0.1
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Administrative expense $ 348    
Research and development discontinued operation 52    
Working capital 30,500      
Marketable securities, available for sale 18,327   $ 18,765  
Unrealized loss on marketable securities 43      
Accumulated unrealized loss on marketable securities 121      
Adjustments to reduce inventory for excess or obsolete inventory 558   1,100  
Cash and cash equivalents 3,387 42,800 3,173 $ 441
Bank balance 3,600   3,300  
Amount of bank balance covered by federal depository insurance 500   500  
Amount of bank balance uninsured 3,100   2,800  
Allowance for bad debt    
Net sales 3,407 771 9,867  
Provision for sales allowances 14   2  
Estimated sales returns 452   480  
Prepaid expenses and other current assets $ 160   143  
Stock issued price per share $ 0.005      
Stock option exercisable period 10 years      
Research and development $ 87 34    
Continued Operations [Member]        
Advertising and incentive promotion expenses 5 32    
Discontinued Operations [Member]        
Advertising and incentive promotion expenses 0 2,600    
Research and development 0 52    
Cooperative Incentive [Member]        
Advertising and incentive promotion expenses 200   200  
Contract Manufacturing [Member]        
Net sales 3,300 727    
Retail Customers [Member]        
Net sales $ 77 $ 42    
Furniture and Fixtures [Member]        
Property, plant and equipment, useful life 5 years      
TK Supplements [Member]        
Adjustments to reduce inventory for excess or obsolete inventory $ 149   $ 541  
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 1.87%      
Marketable Securities [Member] | Maximum [Member]        
Investment in securities term 3 years      
Interest rate 2.96%