Quarterly report pursuant to Section 13 or 15(d)

Warrants - Summary of Warrant Activity (Detail)

v3.7.0.1
Warrants - Summary of Warrant Activity (Detail) - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Class of Warrant or Right [Line Items]    
Warrants, Beginning balance 175,584 175,584
Warrants, Granted 4,621,037  
Warrants, Exercised 0 0
Warrants, Expired 0 0
Warrants, Ending balance 4,796,621 175,584
Weighted Average [Member]    
Class of Warrant or Right [Line Items]    
Weighted Average Price, Beginning balance $ 1.50 $ 1.50
Weighted Average Price, Granted 0.31  
Weighted Average Price, Exercised 0 0
Weighted Average Price, Expired 0 0
Weighted Average Price, Ending balance $ 0.35 $ 1.50