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Fair Value Measurements - Additional Information (Detail) (USD $)
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3 Months Ended |
9 Months Ended |
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Apr. 06, 2013
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Mar. 31, 2012
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Apr. 06, 2013
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Mar. 31, 2012
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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| Discounted cash flow model for estimating discount rate average LIBOR plus |
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2.06% |
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| Carrying amount of the non-current available for sale securities |
$ 45,600 |
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$ 45,600 |
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| Estimated fair value of non-current available for sale securities |
38,700,000 |
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38,700,000 |
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| Charges for impairment of long-lived assets |
$ 1,100,000 |
$ 0 |
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| Weighted average cost of capital |
11.20% |
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| Undiscounted cash flows exceeded net carrying value |
173.00% |
514.00% |
299.00% |
607.00% |
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Minimum [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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| Discounted cash flow model for estimating economic maturity |
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4 years |
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| Annual revenue growth rates |
2.50% |
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Maximum [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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| Discounted cash flow model for estimating economic maturity |
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19 years |
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| Annual revenue growth rates |
5.00% |
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