Computation of Basic and Diluted Earnings Per Share (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Schedule of Computation of Basic and Diluted Earnings Per Share [Line Items]
Numerator for basic earnings per share calculation - income attributable to common shareholders	$ 3,188,453	$ (7,280,898)
Interest on 8% convertble promissory notes	265,882
Dividends for 10% convertible preferred stock	159,797
Accretion of discount on 10% convertible preferred stock	221,386
Numerator for diluted earnings per share calculation - income attributable to common shareholders	$ 3,835,518
Denominator for basic earnings per share - weighted-average shares outstanding	31,874,213	28,862,062
Denominator for diluted earnings per share	90,963,201	28,862,062
Basic earnings per share	$ 0.10	$ (0.25)
Diluted earnings per share	$ 0.04	$ (0.25)
Options and warrants
Schedule of Computation of Basic and Diluted Earnings Per Share [Line Items]
Denominator for diluted earnings per share	13,845,932
8% convertible promissory notes
Schedule of Computation of Basic and Diluted Earnings Per Share [Line Items]
Denominator for diluted earnings per share	38,296,826
10% convertible preferred stock warrants
Schedule of Computation of Basic and Diluted Earnings Per Share [Line Items]
Denominator for diluted earnings per share	6,946,230