Weighted Average Fair Value Assumptions Table (Detail) (USD $)
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3 Months Ended | 6 Months Ended | ||||||||||||||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2012
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Dec. 31, 2011
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||||||||||
Weighted-average fair value of options granted | [1] | [1] | $ 3.80 | [1] | ||||||||||||
Option life | 0 years | [1],[2] | 0 years | [1],[2] | 4 years 6 months | [2] | 0 years | [1],[2] | ||||||||
Risk-free interest rate | [1],[3] | [1],[3] | 0.70% | [3] | [1],[3] | |||||||||||
Stock volatility | [1],[4] | [1],[4] | 58.00% | [4] | [1],[4] | |||||||||||
Dividend rate | [1] | [1] | 0.00% | [1] | ||||||||||||
Stock options granted | ||||||||||||||||
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