Income Taxes - Schedule of effective income tax and tax rate reconciliation (Detail) (USD $)	12 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Income Tax Disclosure [Abstract]
Tax expense (benefit) at statutory rate, % of Pretax	34.00%	34.00%	34.00%
Nondeductible membership dues, % of Pretax	(15.00%)	1.10%	0.20%
Nondeductible meals and entertainment, % of Pretax	(24.70%)	1.70%	0.40%
Other, % of Pretax	(2.80%)	2.00%	0.30%
Total tax expense, % of Pretax	(8.50%)	38.80%	34.90%
Tax expense (benefit) at statutory rate	$ (60,856)	$ 849,792	$ 4,090,206
Nondeductible membership dues	26,853	27,491	27,929
Nondeductible meals and entertainment	44,294	40,720	42,959
Other	4,933	50,950	36,278
Total tax expense	$ 15,224	$ 968,953	$ 4,197,372

Effective Income Tax Rate Reconciliation Nondeductible Expense Membership Dues

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Income Tax Reconciliation Nondeductible Expense Membership Dues

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A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to nondeductible meals and entertainment expenses under enacted tax laws.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to all other items not otherwise listed in the existing taxonomy.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to nondeductible meal and entertainment expenses under enacted tax laws.

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The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the year/accounting period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to all other items not otherwise listed in the existing taxonomy.

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