Quarterly report pursuant to sections 13 or 15(d)

Basis of Presentation and Description of Business - Additional Information (Detail)

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Basis of Presentation and Description of Business - Additional Information (Detail) (USD $)
3 Months Ended 6 Months Ended 97 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Net loss $ 8,380,156 $ 172,676 $ 9,188,596 $ 377,893 $ 13,820,467