Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Investment in Unconsolidated Affiliate (Details Textual)

v3.8.0.1
Note 8 - Investment in Unconsolidated Affiliate (Details Textual)
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2014
USD ($)
Mar. 31, 2018
USD ($)
Mar. 31, 2017
USD ($)
Dec. 31, 2017
USD ($)
Mar. 02, 2018
USD ($)
Jun. 30, 2017
USD ($)
May 31, 2017
Income (Loss) from Equity Method Investments, Total   $ 36,783        
Revenue from Contract with Customer, Including Assessed Tax   1,805,605 3,688,988        
Milestone China [Member]              
Equity Method Investments $ 1,000,000 0   $ 0   $ 0  
Long-term Purchase Commitment, Minimum Quantity Required 772            
Equity Method Investment, Ownership Percentage 40.00%            
Income (Loss) from Equity Method Investments, Total   0 44,401        
Cost-method Investments, Realized Losses   $ 3,524,617   $ 3,147,470      
Equity Method Investment, Deferred Intercompany Profit (Loss), Percentage   40.00%          
Milestone China [Member] | Accounts Receivable from Related Parties [Member]              
Equity Method Investment, Deferred Intercompany Profit (Loss)   $ 751,500          
Milestone China [Member] | Instruments and Handpieces [Member]              
Revenue from Contract with Customer, Including Assessed Tax   $ 0 $ 1,001,800        
Milestone China [Member] | Sale of Variable Interest Entity's Shares [Member]              
Equity Method Investment, Ownership Percentage             40.00%
Milestone China [Member] | Sale of Variable Interest Entity's Shares [Member] | Upon Exercise of Default Agreement [Member]              
Return Obligation, Amount         $ 250,000