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Income Taxes - Additional Information (Detail) (USD $) | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Income Taxes [Line Items] |  |
Net operating loss carryforwards, federal | $ 8,400,000 |
Net operating loss carryforwards, foreign | 1,200,000 |
Income tax net operating loss carryforwards | 116,900,000 |
Net operating loss carryforwards related to foreign income tax | 10,700,000 |
Net deferred tax asset | 0 |
Income tax expense | 0 | 150,742
Dividend from subsidiaries | 9,600,000 |
Estimated annual effective tax rate | 34.39% |
Effective tax rate | 0.00% |
General duration of loss carryback period | 2 years |
Duration of carryback period to 2003 tax year | 5 years |
Cash tax benefit | $ 0 |
Percentage of NOL that will offset future alternative minimum taxable income, 5 years election | 100.00% |
Percentage of NOL that will offset future alternative minimum taxable income, general or 2 years | 90.00% |
Net operating loss carryback period option one | 3 years |
Net operating loss carryback period option two | 4 years |
Net operating loss carryback period option three | 5 years |
Start [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforwards expiration year | 2018 |
End [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforwards expiration year | 2032 |

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