Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Narrative)

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Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Administrative expense $ 348 $ 337  
Research and development discontinued operation 52 47  
Adjustments to reduce inventory for excess or obsolete inventory 1,400   $ 1,600
Cash balance 42,800    
Bank balance 43,100    
Amount of bank balance covered by federal depository insurance 336    
Amount of bank balance uninsured 42,800    
Allowance for bad debt  
Accrued liabilities 400    
Provision for sales allowances 55   108
Advertising and incentive promotion expenses 32 199  
Prepaid expenses and other current assets $ 27   $ 263
Common stock par value $ 0.0005   $ 0.0005
Stock option exercisable period 10 years    
Share-based compensation expense $ 0 1  
Research and development 34 38  
Discontinued Operations [Member]      
Advertising and incentive promotion expenses 2,600 2,900  
Research and development 52 $ 47  
Estimated Future Sales Return [Member]      
Accrued liabilities 872   $ 1,200
Cooperative Incentive [Member]      
Advertising and incentive promotion expenses $ 828   $ 1,500
Building And Improvements [Member] | Minimum [Member]      
Property, plant and equipment, useful life 10 years    
Building And Improvements [Member] | Maximum [Member]      
Property, plant and equipment, useful life 39 years    
Machinery And Equipment [Member] | Minimum [Member]      
Property, plant and equipment, useful life 3 years    
Machinery And Equipment [Member] | Maximum [Member]      
Property, plant and equipment, useful life 7 years    
Computer Software [Member]      
Property, plant and equipment, useful life 3 years    
Furniture and Fixtures [Member]      
Property, plant and equipment, useful life 5 years