Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Deficit) - Schedule of Restricted Stock Activity (Detail)

v3.7.0.1
Stockholders' Equity (Deficit) - Schedule of Restricted Stock Activity (Detail) - 2014 Stock Option/Stock Issuance Plan [Member] - Restricted Stock [Member]
3 Months Ended
Mar. 31, 2017
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares, Unvested, Beginning Balance | shares 208,886
Shares, Granted | shares 1,500
Shares, Forfeited | shares (12,000)
Shares, Vested | shares (22,831)
Shares, Unvested, Ending Balance | shares 175,555
Weighted Average Grant Date Fair Value, Unvested, Beginning Balance | $ / shares $ 4.80
Weighted Average Grant Date Fair Value, Granted | $ / shares 7.67
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 7.50
Weighted Average Grant Date Fair Value, Vested | $ / shares 4.08
Weighted Average Grant Date Fair Value, Unvested, Ending Balance | $ / shares $ 4.72