Quarterly report pursuant to Section 13 or 15(d)

Summary of Warrant Activity (Detail)

v3.4.0.3
Summary of Warrant Activity (Detail) - Warrants
3 Months Ended
Mar. 31, 2016
$ / shares
shares
Shares  
Beginning Balance 10,094,000
Exercised 0
Ending Balance 10,094,000
Warrants exercisable at March 31, 2016 9,959,000
Weighted Average Grant Date Fair Value  
Beginning Balance | $ / shares $ 4.18
Ending Balance | $ / shares 4.18
Warrants exercisable at March 31, 2016 | $ / shares $ 4.18