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Income Taxes - Schedule of Income (Loss) Before Income Taxes (Detail) (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2013 | Sep. 30, 2012
Income Tax Disclosure [Abstract] |  |  |
Expected (benefit) |  | $ (7,193,297) | $ (5,871,516)
U.S. income tax expense at the AMT 20% rate |  | 335,991 |
State income taxes net of federal benefits |  | 77,409 | (167,562)
Nondeductible expense |  | 23,010 | 14,166
Stock options and restricted stock awards |  | 214,670 | 242,390
Gain on sale of subsidiary stock |  | 8,454,148 |
Derivatives |  | (137,755) | 521,008
Change in valuation allowance |  | (1,489,094) | 5,067,370
Effects of: |  |  |
Change in apportionment estimate |  | 400,072 | (40,826)
Change in net operating loss estimate |  | 2,240 | 612,353
Change in capital loss carryover estimate |  |  | (374,051)
Change in AMT credit |  | (320,991) |
Other, net |  | (30,412) | (3,332)
Income tax provision | $ 235,249 | $ 335,991 |

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