Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Additional Information (Detail)

v2.4.0.8
Segment Information - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Country
Dec. 31, 2012
Dec. 31, 2011
Segment Reporting Information [Line Items]      
Number of countries in which the Company sells products 88    
Total assets $ 2,254,003 $ 1,724,143 $ 1,463,075
Goodwill allocated to the Company's Segment 105,490 105,490  
Primary Reporting Segment [Member]
      
Segment Reporting Information [Line Items]      
Total assets 2,065,700 1,607,200  
Goodwill allocated to the Company's Segment 102,400 102,400  
China [Member]
      
Segment Reporting Information [Line Items]      
Total assets 188,300 116,900  
Goodwill allocated to the Company's Segment $ 3,100 $ 3,100