GOODWILL (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill By Reportable Segment

Goodwill by reportable segment was as follows:

	North America			Europe			Total
Balance as of December 31, 2017	$	77,290		$	42,241		$	119,531
Continuum acquisition (Note 2)	26,293			—			26,293
Effect of net foreign currency exchange rate changes	(285		)	(872		)	(1,157		)
Balance as of June 30, 2018	$	103,298		$	41,369		$	144,667