Income Taxes	6 Months Ended
Jun. 30, 2011
Income Taxes [Abstract]
Income Tax Disclosure [Text Block]	INCOME TAXES The effective tax rate was 25.4% for the three months ended June 30, 2011, compared to an effective tax rate of 33.1% for the three months ended June 30, 2010. The effective tax rate was 25.3% for the six months ended June 30, 2011, compared to an effective tax rate of 34.7% for the six months ended June 30, 2010. The provision for income taxes for the three months and six months ended June 30, 2011 is comprised of foreign income taxes, U.S. federal and state taxes, and withholding tax. The provision for income taxes for the three months and six months ended June 30, 2010 is comprised of foreign income taxes, U.S. federal and state taxes, and withholding tax. As of June 30, 2011 and December 31, 2010, unrecognized tax benefits determined in accordance with authoritative guidance on accounting for uncertainty in income taxes, approximated $17.1 million and $11.2 million, respectively. The total amount of unrecognized tax benefits, if recognized, would favorably impact the effective tax rate. It is our policy to classify accrued interest and penalties related to unrecognized tax benefits in the provision for income taxes. As of June 30, 2011, we had approximately $0.3 million accrued for estimated interest related to uncertain tax positions. For the six months ended June 30, 2011, we recorded estimated interest of $0.2 million. Penalties were immaterial at June 30, 2011.

Income Taxes

6 Months Ended

Jun. 30, 2011

INCOME TAXES

The effective tax rate was 25.4% for the three months ended June 30, 2011, compared to an effective tax rate of 33.1% for the three months ended June 30, 2010. The effective tax rate was 25.3% for the six months ended June 30, 2011, compared to an effective tax rate of 34.7% for the six months ended June 30, 2010. The provision for income taxes for the three months and six months ended June 30, 2011 is comprised of foreign income taxes, U.S. federal and state taxes, and withholding tax. The provision for income taxes for the three months and six months ended June 30, 2010 is comprised of foreign income taxes, U.S. federal and state taxes, and withholding tax.

As of June 30, 2011 and December 31, 2010, unrecognized tax benefits determined in accordance with authoritative guidance on accounting for uncertainty in income taxes, approximated $17.1 million and $11.2 million, respectively. The total amount of unrecognized tax benefits, if recognized, would favorably impact the effective tax rate.

It is our policy to classify accrued interest and penalties related to unrecognized tax benefits in the provision for income taxes. As of June 30, 2011, we had approximately $0.3 million accrued for estimated interest related to uncertain tax positions. For the six months ended June 30, 2011, we recorded estimated interest of $0.2 million. Penalties were immaterial at June 30, 2011.