Consolidation of Variable Interest Entity - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Schedule Of Equity Method Investments [Line Items]
Product sales, net	$ 9,491,569	$ 10,333,090
Operating expenses	$ 9,500,057	7,492,501
Milestone Medical Inc. [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	49.98%
Product sales, net	$ 51,000	0
Operating expenses	3,990,000	1,900,000
Interest expense	$ 40,000	$ 280