Stockholders' Equity (Detail)	Dec. 31, 2015 shares
Shares Of Common Stock Reserved For Future Issuance [Line Items]
Options to purchase common stock	369,887
Shares reserved for issuance	620,885
Warrants
Shares Of Common Stock Reserved For Future Issuance [Line Items]
Shares reserved for issuance	179,567
2014 Stock Plan
Shares Of Common Stock Reserved For Future Issuance [Line Items]
Shares reserved for issuance	71,431