Organization and Business - Additional Information (Detail) - USD ($)		1 Months Ended		12 Months Ended
	Jan. 15, 2014	Jun. 30, 2015	Jan. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Nov. 05, 2013	Dec. 31, 2012
Organization and Nature of Operations [Line Items]
Cash				$ 8,854,507	$ 13,858,798	$ 3,551,832		$ 534,046
Authorized capital to be raised							$ 100,000,000
Stock issued during period, shares, new issues	5,000,000		5,000,000
Stock issued during period, value, new issues	$ 15,000,000
Proceeds from issuance initial public offering	$ 13,800,000
Proceeds from Stock Options Exercised				$ 0	$ 435,500	$ 0
Exercise of stock options (in shares)					525,000
Warrant
Organization and Nature of Operations [Line Items]
Stock issued during period, shares, new issues	2,500,000		2,500,000
Stock issued during period, value, new issues		$ 25,000,000
Exercise of stock options (in shares)				0	0	0