STOCK-BASED COMPENSATION (Details - P&L Impact) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Non-cash compensation expense related to equity awards
Total non-cash compensation	$ 2,348	$ 1,978	$ 7,410	$ 6,371
Cost of revenue
Non-cash compensation expense related to equity awards
Total non-cash compensation	29	24	99	68
Selling and marketing expense
Non-cash compensation expense related to equity awards
Total non-cash compensation	737	425	2,118	1,080
General and administrative expense
Non-cash compensation expense related to equity awards
Total non-cash compensation	1,072	1,178	3,511	3,909
Product development
Non-cash compensation expense related to equity awards
Total non-cash compensation	510	351	1,682	1,176
Restructuring and severance
Non-cash compensation expense related to equity awards
Total non-cash compensation	$ 0	$ 0	$ 0	$ 138