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Future Minimum Royalties Payable (Detail) (Royalty Agreements, USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Royalty Agreements
 
Contractual Obligation [Line Items]  
2013 $ 6,423
2014 6,251
2015 6,374
2016 472
2017 550
Thereafter 1,769
Total $ 21,839