Stockholders' Equity (Detail)	Mar. 31, 2016 shares
Shares Of Common Stock Reserved For Future Issuance [Line Items]
Options to purchase common stock	245,595
Shares reserved for issuance	3,704,221
Warrants
Shares Of Common Stock Reserved For Future Issuance [Line Items]
Shares reserved for issuance	1,596,235
2014 Stock Plan
Shares Of Common Stock Reserved For Future Issuance [Line Items]
Shares reserved for issuance	195,723
Series C Convertible Preferred Stock [Member]
Shares Of Common Stock Reserved For Future Issuance [Line Items]
Shares reserved for issuance	1,666,668