Schedule of Shares Issued Upon Exercise of Warrants (Parenthetical) (Detail) - Series J	Sep. 30, 2016 $ / shares
Derivative [Line Items]
Warrant , exercise price aggregate	$ 0.55
Warrant , exercise price pre-funded	$ 0.54

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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