Annual report pursuant to Section 13 and 15(d)

Derivative Liability and Fair Value Measurements (Estimate the fair value of warrants outstanding) (Detail)

v3.6.0.2
Derivative Liability and Fair Value Measurements (Estimate the fair value of warrants outstanding) (Detail) - Monte Carlo Options Lattice Pricing Model Warrants Outstanding - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Assumptions for Pricing Model:    
Expected term in years 1 year 2 months 19 days 2 years 7 months 6 days
Volatility range for years 100.00% 103.00%
Risk-free interest rate 1.47% 1.06%
Expected annual dividends 0.00% 0.00%
Value of warrants outstanding:    
Fair value of warrants $ 173,131 $ 240,786