SEGMENT REPORTING (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total revenue	$ 56,636	$ 31,237	$ 133,001	$ 88,894
Cost of revenue	33,232	17,573	78,285	50,275
Gross profit	$ 23,404	$ 13,664	$ 54,716	$ 38,619
Gross margin	41.00%	44.00%	41.00%	43.00%
Operating income (loss)	$ 203	$ 193	$ (8,871)	$ (448)
Total assets	383,875		383,875		$ 244,424
North America
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total revenue	34,450	29,605	91,081	84,492
Cost of revenue	17,820	16,590	49,187	47,224
Gross profit	$ 16,630	$ 13,015	$ 41,894	$ 37,268
Gross margin	48.00%	44.00%	46.00%	44.00%
Operating income (loss)	$ (10)	$ 362	$ (7,172)	$ 203
Total assets	228,466		228,466		219,402
International
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total revenue	22,186	1,632	41,920	4,402
Cost of revenue	15,412	983	29,098	3,051
Gross profit	$ 6,774	$ 649	$ 12,822	$ 1,351
Gross margin	31.00%	40.00%	31.00%	31.00%
Operating income (loss)	$ 213	$ (169)	$ (1,699)	$ (651)
Total assets	$ 155,409		$ 155,409		$ 25,022