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Accrued Expenses - Components of Accrued Expenses (Detail) (USD $) | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Payables And Accruals [Abstract] |  |
Compensation and bonuses | $ 1,610,357 |
Customer deposits | 22,083 | 82,175
Project proceeds payable | 1,325,122 |
Revenue participation distribution payable |  | 12,506,755
Vessel operations | 1,394,670 | 926,648
Professional services | 222,274 | 335,748
Income tax provision | 496,055 |
Other operating | 223,859 | 199,514
Total accrued expenses | $ 5,294,420 | $ 14,050,840

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