Annual report pursuant to Section 13 and 15(d)

Components of Accounts Receivable, Net of Allowance (Detail)

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Components of Accounts Receivable, Net of Allowance (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Components of accounts receivable, net of allowances    
Trade $ 11,456 $ 8,583
Royalties 45 29
Other 179 287
Total receivables, net $ 11,680 $ 8,899