Annual report pursuant to Section 13 and 15(d)

Accrued Compensation (Additional Information) (Detail)

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Accrued Compensation (Additional Information) (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]  
Percentage Of Interest On Accrued Compensation 8.00%
Debt Instrument, Convertible, Conversion Price $ 2.00