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Investment in Joint Ventures - Additional Information (Detail)	1 Months Ended			12 Months Ended
	Jan. 31, 2016 USD ($) Instruments $ / Instruments	Dec. 31, 2015 USD ($)	Jun. 30, 2014 USD ($) $ / shares	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Jul. 31, 2014
Schedule Of Equity Method Investments [Line Items]
Profit (loss)				$ (5,539,903)	$ (1,707,496)
Gain (Loss) on earnings from joint venture				(2,445,489)	(910,200)
Cost of products sold				$ 3,048,260	$ 3,630,765
Milestone Education LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Percentage of revenue from services performed to variable interest entity		80.00%		80.00%
Percentage of losses on joint venture				50.00%	50.00%
Investment in joint venture		$ 16,346		$ 16,346	$ 24,192
Profit (loss)				(7,846)	(17,889)
Gain (Loss) on earnings from joint venture				$ (7,846)	(17,890)
Advanced Ocular Sciences Inc. [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		25.00%		25.00%
Advances for marketing and strategy planning		$ 78,798		$ 78,798
Milestone China [Member]
Schedule Of Equity Method Investments [Line Items]
Investment in joint venture		0	$ 1,000,000	0	348,651
Equity method investment, ownership percentage			40.00%			40.00%
Distributor price per instrument \| $ / shares			$ 1,295
Delivery period			2 years
Gain (Loss) on earnings from joint venture				(348,651)	$ (810)
Suspended losses on investment		215,347
Deferred profit included in Statements				(69,781)
Milestone China [Member] \| Subsequent Events [Member]
Schedule Of Equity Method Investments [Line Items]
Issue of purchase order \| Instruments	308
Purchase order	$ 308,000
Purchase order value per instrument \| $ / Instruments	1,000
Milestone China [Member] \| Handpieces [Member]
Schedule Of Equity Method Investments [Line Items]
Cost of products sold				507,000
Accounts receivable		$ 357,200		357,200
Milestone China [Member] \| STA Instrument [Member]
Schedule Of Equity Method Investments [Line Items]
Cost of products sold				$ 938,200