SEGMENTS AND INFORMATION BY GEOGRAPHIC LOCATION - SCHEDULE OF REVENUE BY GEOGRAPHIC BASIS (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 44,107	$ 33,561	$ 86,321	$ 65,568
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	35,585	27,853	70,011	54,639
Other
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 8,522	$ 5,708	$ 16,310	$ 10,929

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration