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Prepaid Royalty - Additional Information (Detail) (USD $)
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0 Months Ended | 6 Months Ended | |||
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Jul. 31, 2012
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Dec. 31, 2012
Royalty Agreements Two
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Dec. 31, 2012
Royalty Agreements Two Period One
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Dec. 31, 2012
Royalty Agreements Two Period Two
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Dec. 31, 2012
Royalty Agreements Two Period Three
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| Prepaid Royalty [Line Items] | |||||
| Licensing agreement expiration date | Feb. 29, 2016 | Feb. 29, 2016 | |||
| Guaranteed minimum royalty payment | $ 600,000 | $ 100,000 | $ 225,000 | $ 275,000 | |
| Prepaid licensing agreement recorded under current portion of prepaid royalty | $ 50,000 | ||||