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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2017 | Sep. 30, 2011
Tax Credit Carryforward [Line Items] |  |
Income Tax Examination, Penalties and Interest Accrued |  | $ 3,650,000
NOL allocated amount | $ 4,057,680 |
AFG [Member] |  |
Tax Credit Carryforward [Line Items] |  |
NOL allocated amount | 1,389,646 |
Percentage Of Notional Federal Tax Liability |  | 50.00%
U. S. Federal Net Operating Tax [Member] |  |
Tax Credit Carryforward [Line Items] |  |
NOL allocated amount | 3,985,606 |
Capital Loss Carryforward [Member] | United States [Member] |  |
Tax Credit Carryforward [Line Items] |  |
NOL allocated amount | $ 72,074 |
Minimum [Member] |  |
Tax Credit Carryforward [Line Items] |  |
Operating Loss Carryforwards, Expiration Date | Dec. 31, 2029 |
Maximum [Member] |  |
Tax Credit Carryforward [Line Items] |  |
Operating Loss Carryforwards, Expiration Date | Dec. 31, 2033 |

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