Annual report pursuant to Section 13 and 15(d)

Supplementary Balance Sheet Information - Additional Information (Detail)

v2.4.0.6
Supplementary Balance Sheet Information - Additional Information (Detail) (USD $)
12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2010
Dec. 31, 2012
Dec. 31, 2011
Jun. 30, 2011
2010 P&G Agreement
Sep. 30, 2011
2010 P&G Agreement
Dec. 31, 2012
Land and Building
Floss, Germany
Aug. 21, 2012
Land and Building
Floss, Germany
Accounts and Other Receivables [Line Items]              
Allowances for doubtful accounts and sales returns   $ 414,000 $ 399,000        
Provision for excess inventory and obsolete inventory   1,900,000 2,300,000        
Purchase price of land and building             136,000
Net proceeds from sale of land and building             124,000
Gain on sale of land and building           3,000  
Required impairment charges of remaining land & building 35,000         0  
Recognized previously deferred revenue license fees and royalty       375,000      
Required quarterly license payment to maintain exclusive rights         $ 187,500