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Share Repurchase Plan - Additional Information (Detail) (USD $)
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6 Months Ended | 6 Months Ended | ||||||
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May 31, 2013
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Nov. 30, 2012
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Jun. 06, 2012
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Dec. 31, 2011
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May 31, 2013
Common Stock [Member]
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May 31, 2012
Common Stock [Member]
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May 31, 2013
Saneron [Member]
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Nov. 30, 2012
Saneron [Member]
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| Schedule of Share Repurchase Plan [Line Items] | ||||||||
| Number of shares authorized to repurchase | 3,000,000 | 1,000,000 | ||||||
| Number of shares repurchased | 1,092,765 | 300,391 | 674,379 | |||||
| Average price per share (repurchased) | $ 2.17 | $ 2.22 | $ 2.08 | |||||
| Treasury stock, shares | 1,242,865 | 942,474 | 150,100 | 150,100 | ||||
| Shares repurchase plan | Open market purchases, Privately negotiated block trades, Unsolicited negotiated transactions, and/or trading plan in accordance with Rule 10b5-1 of the Securities and Exchange Commission | |||||||
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- Details
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- Definition
The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. No definition available.
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- Definition
Total cost of shares repurchased divided by the total number of shares repurchased. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Description of share repurchase program, including accounting treatment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of shares held for each class of treasury stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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