Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Segment and Geographic Data - Summary of Operations by Geographic Area (Details)

v3.21.2
Note 11 - Segment and Geographic Data - Summary of Operations by Geographic Area (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Product sales, net $ 2,425,738 $ 167,674 $ 5,350,445 $ 1,979,060
Dental Segment [Member]        
Product sales, net 2,404,738 165,674 5,258,395 1,969,260
Medical Segment [Member]        
Product sales, net 21,000 2,000 92,050 9,800
Domestic [Member]        
Product sales, net 1,000,642 40,354 1,997,700 657,605
Domestic [Member] | Dental Segment [Member]        
Product sales, net 1,000,642 38,354 1,989,550 655,605
Domestic [Member] | Medical Segment [Member]        
Product sales, net 0 2,000 8,150 2,000
Domestic [Member] | Instruments [Member]        
Product sales, net 178,752 0 354,768 525
Domestic [Member] | Instruments [Member] | Dental Segment [Member]        
Product sales, net 178,752 0 354,768 525
Domestic [Member] | Instruments [Member] | Medical Segment [Member]        
Product sales, net 0 0 0 0
Domestic [Member] | Handpieces [Member]        
Product sales, net 802,916 38,812 1,606,050 635,490
Domestic [Member] | Handpieces [Member] | Dental Segment [Member]        
Product sales, net 802,916 36,812 1,597,900 633,490
Domestic [Member] | Handpieces [Member] | Medical Segment [Member]        
Product sales, net 0 2,000 8,150 2,000
Domestic [Member] | Accessories [Member]        
Product sales, net 18,974 1,542 36,882 21,590
Domestic [Member] | Accessories [Member] | Dental Segment [Member]        
Product sales, net 18,974 1,542 36,882 21,590
Domestic [Member] | Accessories [Member] | Medical Segment [Member]        
Product sales, net
Rest of World [Member] | Instruments [Member]        
Product sales, net 172,088 31,800 597,841 281,904
Rest of World [Member] | Instruments [Member] | Dental Segment [Member]        
Product sales, net 156,588 31,800 539,841 274,304
Rest of World [Member] | Instruments [Member] | Medical Segment [Member]        
Product sales, net 15,500 0 58,000 7,600
Rest of World [Member] | Handpieces [Member]        
Product sales, net 715,124 87,632 1,689,459 1,018,123
Rest of World [Member] | Handpieces [Member] | Dental Segment [Member]        
Product sales, net 709,624 87,632 1,663,559 1,017,923
Rest of World [Member] | Handpieces [Member] | Medical Segment [Member]        
Product sales, net 5,500 0 25,900 200
Rest of World [Member] | Accessories [Member]        
Product sales, net 12,548 7,888 33,109 21,428
Rest of World [Member] | Accessories [Member] | Dental Segment [Member]        
Product sales, net 12,548 7,888 33,109 21,428
Rest of World [Member] | Accessories [Member] | Medical Segment [Member]        
Product sales, net 0 0 0 0
International [Member]        
Product sales, net 899,761 127,320 2,320,409 1,321,455
International [Member] | Dental Segment [Member]        
Product sales, net 878,761 127,320 2,236,509 1,313,655
International [Member] | Medical Segment [Member]        
Product sales, net 21,000 0 83,900 7,800
CHINA        
Product sales, net 525,336 0 1,032,336 0
CHINA | Dental Segment [Member]        
Product sales, net 525,336 0 1,032,336 0
CHINA | Medical Segment [Member]        
Product sales, net 0 0 0 0
CHINA | Instruments [Member]        
Product sales, net 78,000 0 228,000 0
CHINA | Instruments [Member] | Dental Segment [Member]        
Product sales, net 78,000 0 228,000 0
CHINA | Instruments [Member] | Medical Segment [Member]        
Product sales, net 0 0 0 0
CHINA | Handpieces [Member]        
Product sales, net 447,336 0 804,336 0
CHINA | Handpieces [Member] | Dental Segment [Member]        
Product sales, net 447,336 0 804,336 0
CHINA | Handpieces [Member] | Medical Segment [Member]        
Product sales, net 0 0 0 0
CHINA | Other Products [Member]        
Product sales, net 0 0 0 0
CHINA | Other Products [Member] | Dental Segment [Member]        
Product sales, net 0
CHINA | Other Products [Member] | Medical Segment [Member]        
Product sales, net $ 0 $ 0 $ 0