GOODWILL AND OTHER INTANGIBLES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Goodwill [Roll Forward]
Carrying amount, December 31, 2018	$ 26,679
Goodwill, Acquired During Period	643
Foreign currency adjustments	(11)
Carrying amount, March 31, 2019	27,311
Finite-Lived Intangible Assets, Net [Abstract]
Gross carrying amount	11,993		$ 11,503
Accumulated amortization	(2,070)		(1,739)
Net carrying amount	9,923		9,764
Amortization expense	303	$ 97
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2019 (remaining)	968
2020	1,284
2021	1,280
2022	1,262
2023	915
Thereafter	4,214
Net carrying amount	9,923		9,764
Developed technology
Finite-Lived Intangible Assets, Net [Abstract]
Gross carrying amount	8,200		8,200
Accumulated amortization	(205)		0
Net carrying amount	7,995		8,200
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Net carrying amount	7,995		8,200
Customer relationships and other
Finite-Lived Intangible Assets, Net [Abstract]
Gross carrying amount	3,793		3,303
Accumulated amortization	(1,865)		(1,739)
Net carrying amount	1,928		1,564
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Net carrying amount	$ 1,928		$ 1,564