Annual report pursuant to Section 13 and 15(d)

Supplementary Balance Sheet Information - Additional Information (Detail)

v2.4.0.8
Supplementary Balance Sheet Information - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
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 $ 573,000 $ 304,000    
Provision for sales returns 110,000 110,000    
Provision for excess inventory and obsolete inventory 2,800,000 1,900,000    
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     $ 0