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Stockholders' Equity - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified |
12 Months Ended | 1 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | |||
|---|---|---|---|---|---|---|---|---|---|
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Aug. 31, 2012
Vote
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Aug. 31, 2011
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Apr. 07, 2010
Series A 15% Cumulative Non-Voting Non-Convertible Preferred Stock, Redeemable [Member]
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Aug. 31, 2012
Series A 15% Cumulative Non-Voting Non-Convertible Preferred Stock, Redeemable [Member]
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May 31, 2012
Series B Voting Convertible Preferred Stock [Member]
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Aug. 31, 2012
Series B Voting Convertible Preferred Stock [Member]
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Apr. 07, 2010
Series B Voting Convertible Preferred Stock [Member]
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Aug. 31, 2012
Series B Voting Convertible Preferred Stock [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
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May 31, 2012
Common Stock [Member]
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| Preferred Stock [Line Items] | |||||||||
| Fair value of preferred stock | $ 100 | $ 40,000 | $ 7,700 | ||||||
| Dividend yield on preferred stock (in percentage) | 15.00% | 6.00% | |||||||
| Preferred stock, shares issued | 0 | 100,000 | |||||||
| Preferred stock conversion basis | Ten shares of common stock per one share of Series B Preferred Stock | ||||||||
| Number of votes preferred stock holders entitled for each common share | 1 | ||||||||
| Series B preferred stock | 100,000 | ||||||||
| Series B preferred stock converted to common shares | 1,000,000 |