Annual report pursuant to Section 13 and 15(d)

Fair Value of Warrants (Detail)

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Fair Value of Warrants (Detail)
Feb. 06, 2015
Sep. 26, 2014
Class of Stock [Line Items]    
Warrants risk-free interest rate 1.48% 1.82%
Warrants expected life 5 years 5 years
Warrants expected volatility 119.00% 136.00%
Warrants expected dividend yield 0.00% 0.00%