Annual report pursuant to Section 13 and 15(d)

Fair Value of Assets and Liabilities - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)

Fair Value of Assets and Liabilities - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Derivative warrant liability recorded for warrants issued			$ 19,932us-gaap_DerivativeLiabilitiesCurrent
Change in fair value of the derivative warrant liability	28,448us-gaap_FairValueAdjustmentOfWarrants	28,448us-gaap_FairValueAdjustmentOfWarrants	(1,978)us-gaap_FairValueAdjustmentOfWarrants
Derivative warrant liability, Ending balance		0
Fair Value, Measurements, Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Derivative warrant liability, Beginning balance	19,932	19,932
Change in fair value of the derivative warrant liability		28,448	(1,978)
Reclassification of derivative warrant liability		(48,380)
Derivative warrant liability, Ending balance			19,932
Fair Value, Measurements, Recurring [Member] \| Warrant [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Derivative warrant liability recorded for warrants issued			21,910
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Derivative warrant liability, Beginning balance	19,932	19,932
Change in fair value of the derivative warrant liability		28,448	(1,978)
Reclassification of derivative warrant liability		(48,380)
Derivative warrant liability, Ending balance			19,932
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Warrant [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Derivative warrant liability recorded for warrants issued			$ 21,910

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References + Details