|
Segment Information (Details Textuals) (USD $)
|
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
|
Jun. 30, 2011
|
Jun. 30, 2010
|
Jun. 30, 2011
|
Jun. 30, 2010
|
Dec. 31, 2010
|
|
| Segment Reporting Information [Line Items] | |||||
| Total assets for the Company's Segment | $ 1,399,619,000 | $ 1,399,619,000 | $ 1,232,220,000 | ||
| Segment Information (Textuals) [Abstract] | |||||
| Number of countries where the products are sold | 75 | 75 | |||
|
Primary Reporting Segment [Member]
|
|||||
| Segment Reporting Information [Line Items] | |||||
| Total assets for the Company's Segment | 1,322,900,000 | 1,322,900,000 | 1,162,100,000 | ||
|
China [Member]
|
|||||
| Segment Reporting Information [Line Items] | |||||
| China salesperson compensation and service fee costs | 23,700,000 | 24,300,000 | 45,500,000 | 40,500,000 | |
| Total assets for the Company's Segment | $ 76,700,000 | $ 76,700,000 | $ 70,100,000 | ||