Liquidity and Management's Plans - Additional Information (Details) - USD ($)		1 Months Ended	2 Months Ended	3 Months Ended
	Mar. 31, 2017	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2017	Mar. 31, 2016
Conversion Of Stock [Line Items]
Net proceeds from sale of common stock				$ 2,122,861	$ 0
Proceeds from issuance of private placement net			$ 9,500,000
Common Stock [Member] | Promissory Note [Member] | Merck GHI [Member]
Conversion Of Stock [Line Items]
Debt instrument, carrying amount	$ 1,000,000			$ 1,000,000
Debt instrument, maturity period				2017-07
Debt instrument, description				If the Company is unable to repay the note, negotiate its conversion or extend its term, the assets of the Company may be seized, as the note is secured by a lien on all the Company’s assets.
Private Placement [Member]
Conversion Of Stock [Line Items]
Proceeds from issuance of private placement net			$ 9,500,000
Class of warrant or right, number of securities called by warrants or rights			6,790,169
Class of warrant or right, exercise price of warrants or rights			$ 1.14
Sale of stock, description of transaction				(i) one share of common stock and a detachable stock purchase warrant to purchase an additional 0.75 shares of common stock, or (ii) one share of non-voting convertible preferred stock and a detachable stock purchase warrant to purchase an additional 0.75 shares of common stock, at a price of $1.14 per unit.
Private Placement [Member] | Common Stock [Member]
Conversion Of Stock [Line Items]
Stock issued during period, shares, new issues			6,744,127
Private Placement [Member] | Non-voting Convertible Preferred Stock [Member]
Conversion Of Stock [Line Items]
Stock issued during period, shares, new issues			2,309,428
Cowen and Company, LLC [Member] | Sales Agreement [Member] | At the Market Offering [Member]
Conversion Of Stock [Line Items]
Stock issued during period, value, new issues		$ 11,500,000
Maximum commission percentage on gross proceeds		3.00%
Net proceeds from sale of common stock	6,500,000			$ 2,100,000
Gross proceeds from sale of common stock	6,900,000			$ 2,200,000
Remaining availability under at the market offering	$ 4,600,000	$ 4,600,000
Cowen and Company, LLC [Member] | Sales Agreement [Member] | At the Market Offering [Member] | Common Stock [Member]
Conversion Of Stock [Line Items]
Stock issued during period, shares, new issues	5,700,000			2,100,000
Cowen and Company, LLC [Member] | Sales Agreement [Member] | Maximum [Member] | At the Market Offering [Member]
Conversion Of Stock [Line Items]
Aggregate gross proceeds from issuance of common stock		$ 25,000,000