Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Notes Receivable, Related Party (Details Textual)

v3.10.0.1
Note 4 - Notes Receivable, Related Party (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Apr. 30, 2018
Jun. 30, 2017
Mar. 31, 2018
Mar. 30, 2018
Sep. 30, 2018
Sep. 30, 2017
Jun. 01, 2017
Jun. 30, 2014
Proceeds from Sale of Variable Interest Entity Shares with Agreement to Repurchase         $ (250,000) $ 250,000    
Milestone China [Member]                
Equity Method Investment, Ownership Percentage               40.00%
Equity Method Investment, Deferred Gain on Sale   $ 1,400,000            
Equity Method Investments         $ 0     $ 1,000,000
Milestone China [Member] | Sale of Variable Interest Entity's Shares [Member]                
Equity Method Investment, Ownership Percentage             40.00%  
Option to Repurchase, Period   10 years            
Price for Shares of Variable Interest Entity Interest Sold   $ 1,400,000            
Proceeds from Sale of Variable Interest Entity Shares with Agreement to Repurchase   125,000            
Financing Receivable, Net, Total   1,275,000            
Note Receivable, Quarterly Installment Amount   125,000            
Option to Repurchase Variable Interest Entity Shares, Purchase Price   $ 1,400,000            
Option to Repurchase Variable Entity Shares at Specified Purchase Price, Period   2 years            
Return Obligation, Amount Repaid $ 250,000              
Notes Receivable, Reversal Amount     $ 1,150,000          
Equity Method Investment, Reversal of Deferred Gain on Sale       $ 1,400,000        
Termination Agreement, Gain (Loss) on Transaction     $ 0