Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Schedule Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Numerator for basic earnings per share calculation - income attributable to common shareholders	$ (4,274,694)	$ 2,567,665	$ (11,023,550)	$ (14,860,270)
Interest on 8% convertible promissory notes		361,414
Dividends for 10% convertible preferred stock		152,237
Numerator for diluted earnings per share calculation - income attributable to common shareholders		$ 3,081,316
Denominator for basic earnings per share - weighted-average shares outstanding	75,459,570	69,066,096
Denominator for diluted earnings per share	75,459,570	127,971,683
Basic earnings per share	$ (0.06)	$ 0.04
Diluted earnings per share	$ (0.06)	$ 0.02
Options and warrants
Schedule Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Denominator for basic earnings per share - weighted-average shares outstanding		194,762
10% convertible preferred stock warrants
Schedule Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Denominator for basic earnings per share - weighted-average shares outstanding		8,349,975
Various convertible promissory notes
Schedule Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Denominator for basic earnings per share - weighted-average shares outstanding		50,360,850