CONSOLIDATED FINANCIAL STATEMENT DETAILS (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other current assets:
Prepaid expenses	$ 39,311	$ 23,942
Capitalized downloadable search toolbar costs, net	29,608	21,171
Production costs	24,599	17,717
Deferred income taxes	17,993	34,381
Income taxes receivable	4,505	12,242
Other	50,726	52,077
Other current assets	166,742	161,530
Property and equipment, net:
Property and equipment, gross	581,993	559,262
Accumulated depreciation and amortization	(279,534)	(265,298)
Property and equipment, net	302,459	293,964
Other non-current assets:
Production Costs	11,586	22,423
Income taxes receivable	1,478	19,217
Restricted cash - funds held in escrow for Meetic tender offer	0	71,512
Other	43,629	51,533
Other non-current assets	56,693	164,685
Accrued expenses and other current liabilities:
Accrued employee compensation and benefits	101,830	85,006
Accrued advertising expense	87,485	63,406
Accrued revenue share expense	50,624	72,274
Income taxes payable	41,157	16,159
Other	116,707	114,193
Accrued Liabilities, Current	397,803	351,038
Buildings and leasehold improvements
Property and equipment, net:
Property and equipment, gross	230,577	246,283
Computer equipment and capitalized software
Property and equipment, net:
Property and equipment, gross	238,960	208,426
Furniture and other equipment
Property and equipment, net:
Property and equipment, gross	87,788	84,787
Projects in progress
Property and equipment, net:
Property and equipment, gross	19,551	14,649
Land
Property and equipment, net:
Property and equipment, gross	$ 5,117	$ 5,117