GOODWILL AND OTHER INTANGIBLES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Goodwill [Roll Forward]
Carrying amount, December 31, 2017	$ 26,687
Foreign currency adjustments	23
Carrying amount, March 31, 2018	26,710
Finite-Lived Intangible Assets, Net [Abstract]
Gross carrying amount	3,309		$ 3,309
Accumulated amortization	(1,448)		(1,351)
Net carrying amount	1,861		1,958
Amortization expense	97	$ 97
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2018 (remaining)	291
2019	388
2020	388
2021	384
2022	378
Thereafter	32
Net carrying amount	$ 1,861		$ 1,958