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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2016 | Sep. 30, 2011
Tax Credit Carryforward [Line Items] |  |
Income Tax Examination, Penalties and Interest Accrued |  | $ 3,650,000
NOL allocated amount | $ 4,325,337 |
Operating tax carryforward expiration year start | 2029 |
Operating tax carryforward expiration year end | 2036 |
Percentage Of Notional Federal Tax Liability |  | 25.00%
AFG [Member] |  |
Tax Credit Carryforward [Line Items] |  |
NOL allocated amount | $ 1,383,898 |
U. S. Federal Net Operating Tax [Member] |  |
Tax Credit Carryforward [Line Items] |  |
NOL allocated amount | 4,240,105 |
United States [Member] |  |
Tax Credit Carryforward [Line Items] |  |
NOL allocated amount | 85,232 |
United Kingdom [Member] |  |
Tax Credit Carryforward [Line Items] |  |
NOL allocated amount | $ 0 |

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