Composition of Certain Financial Statement Captions - Summary of Composition of Certain Financial Statement Captions (Detail) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Inventories:
Raw material	$ 142,491	$ 305,149
Work in process	2,429,075	1,539,319
Finished goods	2,755,396	3,879,929
Inventory, Total	5,326,962	5,724,397
Equipment, molds, furniture and fixtures:
Furniture, fixtures and office equipment	2,234,222	2,058,146
Production molds and equipment	10,582,575	8,481,005
Molds and tooling in process	10,149,596	8,169,543
Less accumulated depreciation	(5,098,981)	(3,915,610)
Equipment, molds, furniture and fixtures, Total	17,867,412	14,793,084
Patent rights:
Patent rights	4,659,103	4,533,439
Less accumulated amortization	(2,614,495)	(2,098,897)
Patent rights, Total	2,044,608	2,434,542
Accrued expenses and other liabilities:
Accrued employee compensation and benefits	2,703,470	3,018,987
Other liabilities	1,685,677	2,717,727
Accrued expenses and other liabilities	5,872,846	6,488,032
OTREXUP [Member]
Accrued expenses and other liabilities:
OTREXUP® product sales allowances	$ 1,483,699	$ 751,318