Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Additional Information (Detail)

v2.4.0.8
Segment Information - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Foreign Subsidiaries
Dec. 31, 2012
Foreign Subsidiaries
Segment Reporting Information [Line Items]            
Percentage of net sales in the United States 62.00% 68.00% 62.00% 68.00%    
Percentage of net sales outside the United States 38.00% 32.00% 38.00% 32.00%    
Countries representing > 10% of total net revenue     No individual country, other than the United States, represents more than 10% of total net revenue.      
Long-lived assets outside of the United States         $ 442,000 $ 412,000