Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Additional Information (Detail)

v2.4.0.6
Segment Information - Additional Information (Detail) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 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%    
Percentage of net sales outside the United States 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     $ 397,000 $ 412,000