STOCK-BASED COMPENSATION (Details - P&L Impact) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Non-cash compensation expense related to equity awards
Total non-cash compensation	$ 11,917	$ 14,053
Cost of revenue
Non-cash compensation expense related to equity awards
Total non-cash compensation	242	153
Selling and marketing expense
Non-cash compensation expense related to equity awards
Total non-cash compensation	1,156	1,749
General and administrative expense
Non-cash compensation expense related to equity awards
Total non-cash compensation	9,123	10,221
Product development
Non-cash compensation expense related to equity awards
Total non-cash compensation	$ 1,396	$ 1,930