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SIGNIFICANT ACCOUNTING POLICIES (Details - PP&E, Goodwill, Int. & Advertising) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property and Equipment
Impairment of long-lived assets	$ 0	$ 805	$ 0
Advertising
Advertising Expense	$ 159,200	102,200	$ 80,700
Computer equipment and capitalized software
Property and Equipment
Impairment of long-lived assets		$ 400
Computer equipment and capitalized software \| Minimum
Property and Equipment
Depreciation period	1 year
Computer equipment and capitalized software \| Maximum
Property and Equipment
Depreciation period	5 years
Furniture and other equipment \| Minimum
Property and Equipment
Depreciation period	3 years
Furniture and other equipment \| Maximum
Property and Equipment
Depreciation period	7 years
Software development \| Minimum
Property and Equipment
Depreciation period	1 year
Software development \| Maximum
Property and Equipment
Depreciation period	3 years