Net Loss per Share - Schedule of Computation of Basic and Diluted Earnings Per Share (Detail) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Net loss applicable to common stockholders - numerator for basic and diluted earnings per share	$ (9,897,678)	$ (17,799,351)
Weighted - average common shares outstanding - denominator for basic and diluted earnings per share	100,554,314	77,055,327
Basic and diluted	$ (0.10)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.23)us-gaap_EarningsPerShareBasicAndDiluted

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

No definition available.

Name:	us-gaap_EarningsPerShareBasicAndDiluted
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration