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Furniture, Fixtures and Equipment - Schedule of Furniture, Fixtures and Equipment (Details) - USD ($)
9 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Office furniture, fixtures and equipment $ 825,526 $ 802,681
Warehouse and production equipment 537,471 526,932
Demonstration and tradeshow equipment 466,394 426,582
Leasehold improvements 163,171 160,198
Rental equipment 126,968 124,553
Total cost 2,119,530 2,040,946
Less: accumulated depreciation and amortization (1,977,543) (1,793,405)
Net furniture, fixtures and equipment $ 141,987 $ 247,541
Minimum [Member]    
Estimated Useful Life 3 years  
Maximum [Member]    
Estimated Useful Life 10 years  
Office Furniture, Fixtures and Equipment [Member] | Minimum [Member]    
Estimated Useful Life 3 years  
Office Furniture, Fixtures and Equipment [Member] | Maximum [Member]    
Estimated Useful Life 10 years  
Warehouse and Production Equipment [Member] | Minimum [Member]    
Estimated Useful Life 3 years  
Warehouse and Production Equipment [Member] | Maximum [Member]    
Estimated Useful Life 5 years  
Demonstration and Tradeshow Equipment [Member] | Minimum [Member]    
Estimated Useful Life 2 years  
Demonstration and Tradeshow Equipment [Member] | Maximum [Member]    
Estimated Useful Life 5 years  
Leasehold Improvements [Member] | Minimum [Member]    
Estimated Useful Life 2 years  
Leasehold Improvements [Member] | Maximum [Member]    
Estimated Useful Life 5 years  
Rental Equipment [Member] | Minimum [Member]    
Estimated Useful Life 1 year  
Rental Equipment [Member] | Maximum [Member]    
Estimated Useful Life 3 years