THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Minimum number of brands owned by company			50
Minimum number of countries where company has consumer audiences			30
Number of variable interest entities in which entity is primary beneficiary			1
Revenue from major customers
Accounts receivable	$ 126,887,000		$ 126,887,000		$ 119,581,000
Google Inc.
Revenue from major customers
Revenue earned	221,300,000	174,100,000	436,200,000	345,700,000
Accounts receivable	$ 75,300,000		$ 75,300,000		$ 70,500,000