Goodwill and Other Intangible Assets - Changes in Goodwill (Detail) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Balance as of December 31, 2013	$ 2,139,294us-gaap_Goodwill
Net deferred tax liability		(293,000)us-gaap_DeferredTaxLiabilities
Foreign currency translation	(118,497)us-gaap_GoodwillTranslationAdjustments
Impairment	(1,910,062)us-gaap_GoodwillImpairmentLoss
In-process research and development [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Net deferred tax liability	$ (110,735)

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Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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