Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Segment and Geographic Data - Summary of Operations by Geographic Area (Details)

v3.10.0.1
Note 12 - Segment and Geographic Data - Summary of Operations by Geographic Area (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Product sales, net $ 1,622,246 $ 2,853,813 $ 5,856,351 $ 9,066,550
Domestic [Member]        
Product sales, net 509,254 1,358,066 2,620,541 4,141,129
Domestic [Member] | Devices [Member]        
Product sales, net 119,190 452,232 251,743 857,525
Domestic [Member] | Handpieces [Member]        
Product sales, net 369,027 893,496 2,296,533 3,230,567
Domestic [Member] | Manufactured Product, Other [Member]        
Product sales, net 21,037 12,338 72,265 53,037
Rest of World [Member]        
Product sales, net 812,992 1,139,347 2,935,810 3,210,821
Rest of World [Member] | Devices [Member]        
Product sales, net 299,872 340,575 952,390 1,053,050
Rest of World [Member] | Handpieces [Member]        
Product sales, net 506,880 765,821 1,924,901 2,068,007
Rest of World [Member] | Manufactured Product, Other [Member]        
Product sales, net 6,240 32,951 58,519 89,764
CHINA        
Product sales, net 300,000 356,400 300,000 1,714,600
CHINA | Devices [Member]        
Product sales, net 1,000,000
CHINA | Handpieces [Member]        
Product sales, net 300,000 356,400 300,000 712,800
CHINA | Manufactured Product, Other [Member]        
Product sales, net $ 1,800