Future Royalty Minimum Payment (Detail) (USD $)	Dec. 31, 2013
Future Royalty Minimum Payment [Line Items]
2014	$ 1,800,000
2015	2,100,000
2016	2,700,000
2017	3,200,000
2018	3,800,000
Future minimum royalty payments due	$ 13,600,000

Amount of required minimum royalty payments in future.

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Amount of required minimum royalty payments maturing in the next fiscal year following the latest fiscal year.

No definition available.

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Amount of required minimum royalty payments maturing in the next fiscal year following the fifth fiscal year.

No definition available.

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Amount of required minimum royalty payments maturing in the next fiscal year following the fourth fiscal year.

No definition available.

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Amount of required minimum royalty payments maturing in the next fiscal year following the third fiscal year.

No definition available.

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Amount of required minimum royalty payments maturing in the next fiscal year following the second fiscal year.

No definition available.

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