Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Related Party Transactions (Details Textual)

v3.19.2
Note 12 - Related Party Transactions (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 5 Months Ended 6 Months Ended 12 Months Ended
Feb. 28, 2019
Dec. 31, 2018
Jan. 31, 2017
Aug. 31, 2016
Jun. 30, 2019
Jun. 30, 2018
Nov. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Jun. 30, 2014
Director of Clinical Affairs [Member]                      
Royalty Expense         $ 108,000 $ 116,956   $ 199,000 $ 202,481    
Professional Fees         39,000 39,000   78,000 107,751    
Accounts Payable, Related Parties   $ 364,000     410,000     410,000   $ 364,000  
Milestone China [Member]                      
Financing Receivable, after Allowance for Credit Loss, Total   2,800,000               2,800,000  
Account Receivables, Related Party, Monthly Payment             $ 200,000        
Accounts Receivable, Related Party, Balloon Payment to be Paid   1,425,000                  
Inventory Adjustments, Total         1,250,000     1,250,000      
Equity Method Investment, Ownership Percentage                     40.00%
United Systems [Member]                      
Capitalized Contract Cost, Net, Total   686,365               686,365  
Wand Dental Inc [Member]                      
Deferred Revenue, Current, Total   342,540     342,540     342,540   342,540  
Manufacturing Agreement for Handpieces [Member]                      
Related Party Transaction, Purchases from Related Party         167,000 222,000   505,600 574,000    
Due to Related Parties, Total   $ 1,000,000     1,000,000     1,000,000   1,000,000  
Consulting Services [Member]                      
Consulting Services Agreement, Term       3 years              
Related Party Transaction, Expenses from Transactions with Related Party         25,000 25,000   50,000 50,000    
Consulting Services [Member] | United Systems [Member]                      
Stock Issued During Period, Shares, Issued for Services 285,714                    
Shares Issued, Price Per Share $ 0.35                    
Stock Issued During Period, Value, Issued for Services $ 100,000                    
Distributor Agreement to Milestone China [Member] | United Systems [Member]                      
Revenue from Related Parties                   $ 750,000  
Consultant [Member] | Innovest S.p.A. [Member]                      
Consulting Services Agreement, Term     1 year                
Related Party Transaction, Expenses from Transactions with Related Party         $ 20,000 $ 20,000   $ 40,000 $ 40,000    
Consulting Services Agreement, Renewal Term     1 year