Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Narrative)

v3.21.1
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Unrealized loss on marketable securities $ 11 $ 11  
Adjustments to reduce inventory for excess, obsolete or short-dated shelf-life inventory 89   $ 167
Cash and cash equivalents 32,727   6,816
Bank balance 32,700    
Amount of bank balance covered by federal depository insurance 500    
Amount of bank balance uninsured 32,500    
Revenues, net 15,271 1,888  
Estimated sales returns, continuing operation 299   291
Deferred revenue 278   331
Share-based compensation expense 428 198  
Research and development cost 115 59  
Cooperative Incentive Promotion Costs [Member]      
Estimated sales returns, continuing operation 258   $ 463
Advertising and incentive promotion expenses, continuing operation 168 47  
Consumer Products [Member]      
Revenues, net 2,534 1,888  
Diagnostic Services [Member]      
Revenues, net $ 12,737  
Furniture and Fixtures [Member]      
Property, plant and equipment, estimated useful life 5 years    
Minimum [Member] | Building Improvements [Member]      
Property, plant and equipment, estimated useful life 10 years    
Minimum [Member] | Machinery [Member]      
Property, plant and equipment, estimated useful life 3 years    
Minimum [Member] | Lab Equipment [Member]      
Property, plant and equipment, estimated useful life 3 years    
Minimum [Member] | Computer Equipment [Member]      
Property, plant and equipment, estimated useful life 3 years    
Maximum [Member] | Building Improvements [Member]      
Property, plant and equipment, estimated useful life 39 years    
Maximum [Member] | Machinery [Member]      
Property, plant and equipment, estimated useful life 7 years    
Maximum [Member] | Lab Equipment [Member]      
Property, plant and equipment, estimated useful life 7 years    
Maximum [Member] | Computer Equipment [Member]      
Property, plant and equipment, estimated useful life 5 years    
Marketable Securities [Member] | Minimum [Member]      
Interest rate 0.94%    
Marketable Securities [Member] | Maximum [Member]      
Interest rate 3.35%