Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Equity Transactions - Roll Forward of RSU Activity (Detail)

v3.6.0.2
Equity Transactions - Roll Forward of RSU Activity (Detail) - Restricted Common Stock [Member] - $ / shares
12 Months Ended
Apr. 15, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of Warrants or restricted shares, Nonvested, Beginning balance   126,995 128,375 8,000
Number of restricted shares, Granted 125,000 43,332 11,440 138,500
Number of restricted shares, Vested   (33,083) (12,820) (18,125)
Number of Warrants or restricted shares, Nonvested, Ending balance   137,244 126,995 128,375
Weighted average grant date fair value, Nonvested, Beginning balance   $ 3.10 $ 3.06 $ 1.44
Weighted average grant date fair value, Granted $ 3.05 8.49 5.08 3.07
Weighted average grant date fair value, Vested   8.13 4.56 2.45
Weighted average grant date fair value, Nonvested, Ending balance   $ 3.59 $ 3.10 $ 3.06