Annual report pursuant to Section 13 and 15(d)

Organization - Additional Information (Detail)

v2.4.0.6
Organization - Additional Information (Detail)
12 Months Ended
Dec. 31, 2012
Segment
Distributor
Organization And Description Of Business [Line Items]  
Number of geographic regions 6
Number of independent distributors 3,200,000
China [Member]
 
Organization And Description Of Business [Line Items]  
Number of independent distributors 200,000