Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Restricted Stock Activity (Detail)

v3.6.0.2
Stockholders' Equity - Restricted Stock Activity (Detail)
12 Months Ended
Dec. 31, 2016
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Number of shares, Restricted stock granted 1,950,000
Number of shares, Restricted stock vested (366,666)
Number of shares, Restricted units cancelled (1,250,000)
Number of shares, Unvested balance 333,334
Restricted Stock [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Number of shares, Unvested balance 8,757,935
Number of shares, Restricted stock granted 1,240,868
Number of shares, Restricted stock cancelled (33,333)
Number of shares, Restricted stock vested (173,333)
Number of shares, Restricted stock units granted 641,000
Number of shares, Restricted units cancelled (111,750)
Restricted stock units vested (227,292)
Number of shares, Unvested balance 10,094,095
Weighted average grant price, Unvested balance | $ / shares $ 2.47
Weighted average grant price, Restricted stock granted | $ / shares 2.77
Weighted average grant price, Restricted stock cancelled | $ / shares 2.69
Weighted average grant price, Restricted stock vested | $ / shares 2.73
Weighted average grant price, Restricted stock units granted | $ / shares 2.93
Weighted average grant price, Restricted stock units cancelled | $ / shares 3.58
Weighted average grant price, Restricted stock units vested | $ / shares 3.56
Weighted average grant price, Unvested balance | $ / shares $ 2.49