SEGMENTS AND INFORMATION BY GEOGRAPHIC LOCATION - SCHEDULE OF REVENUE BY PRODUCT LINE (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Revenue	$ 35,262	$ 26,081	$ 100,830	$ 73,104
Subscription and services
Segment Reporting Information [Line Items]
Revenue	21,185	15,965	60,554	44,346
Payments
Segment Reporting Information [Line Items]
Revenue	13,484	9,539	38,540	26,840
Product and other
Segment Reporting Information [Line Items]
Revenue	$ 593	$ 577	$ 1,736	$ 1,918