Organization and Business - Additional Information (Detail) (USD $)	0 Months Ended	1 Months Ended	6 Months Ended		12 Months Ended	86 Months Ended					0 Months Ended	1 Months Ended	0 Months Ended	12 Months Ended
	Jan. 15, 2014	Jun. 30, 2012	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2011	Jun. 30, 2014	Dec. 31, 2013	Nov. 05, 2013	Dec. 31, 2012	May 09, 2007	Jan. 15, 2014 Sabby Investors	Jun. 30, 2010 Warrant	Jan. 15, 2014 Warrant Sabby Investors	Dec. 31, 2011 siRNA License
Organization and Nature of Operations [Line Items]
Percentage of Charge					50.00%
Impairment of License		$ 345,000	$ 0	$ 0		$ 690,000								$ 345,000
Cash			15,721,128	1,927,226		15,721,128	3,551,832		534,046	0
Authorized capital to be raised								100,000,000
Stock issued during period, shares, new issues											5,000,000	571,429	2,500,000
Stock issued during period, value, new issues	15,000,000
Proceeds from issuance initial public offering	$ 13,800,000