Note 4 - Investment in Unconsolidated Subsidiaries (Details Textual)	1 Months Ended		3 Months Ended		6 Months Ended
	Jan. 31, 2016 USD ($) $ / item	Jun. 30, 2014 USD ($) $ / shares	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Advanced Ocular Sciences SA [Member]
Equity Method Investment, Ownership Percentage			25.00%		25.00%
Advances to Affiliate							$ 78,798
Cost-method Investments, Realized Losses					$ 19,700
Milestone China [Member] | Instruments and Handpieces [Member]
Cost of Goods Sold					1,356,000
Milestone China [Member] | STA Instruments and Handpieces [Member]
Accounts Receivable, Related Parties			$ 1,156,000		1,156,000
Milestone China [Member]
Equity Method Investment, Ownership Percentage		40.00%
Cost-method Investments, Realized Losses					363,833
Equity Method Investments		$ 1,000,000	0	$ 284,672	0	$ 284,672
Long-term Purchase Commitment, Minimum Quantity Required	308	772
Distributor Price Per Instrument | $ / shares		$ 1,296
Long-term Purchase Commitment, Amount	$ 400,000
Long-term Purchase Commitment, Amount per Instrument | $ / item	1,296
Additional Equity Method Investments	$ 165,000
Income (Loss) from Equity Method Investments			(57,882)	(160,654)	(222,719)	(63,979)
Equity Method Investment, Unrealized Intercompany Profit (Loss) Not Eliminated, Amount					127,663
Income (Loss) from Equity Method Investments			(57,882)	(690,213)	(222,719)	(1,047,914)
Cost of Goods Sold			$ 789,801	$ 570,729	$ 2,157,990	$ 1,503,877