STOCK-BASED COMPENSATION (Details - P&L Impact) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Non-cash compensation expense related to equity awards
Total non-cash compensation	$ 2,429	$ 2,057	$ 5,062	$ 4,393
Cost of revenue
Non-cash compensation expense related to equity awards
Total non-cash compensation	29	24	70	44
Selling and marketing expense
Non-cash compensation expense related to equity awards
Total non-cash compensation	655	385	1,381	655
General and administrative expense
Non-cash compensation expense related to equity awards
Total non-cash compensation	1,129	1,125	2,439	2,731
Product development
Non-cash compensation expense related to equity awards
Total non-cash compensation	616	385	1,172	825
Restructuring and severance
Non-cash compensation expense related to equity awards
Total non-cash compensation	$ 0	$ 138	$ 0	$ 138