GOODWILL AND OTHER INTANGIBLES (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) Patent Certificate	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Change in carrying amount of goodwill [Roll Forward]
Goodwill, Beginning of year	$ 17,280	$ 17,484
Foreign currency translation adjustment	191	(204)
Goodwill, End of year	17,471	17,280	$ 17,484
Other intangible assets, net [Abstract]
Intangible assets, net	$ 5,254	5,996
Number of patents | Patent	5
Number of utility patents | Patent	4
Number of design patents | Patent	1
Amortization expense	$ 1,136	1,138
Amortization Expense, Fiscal Year Maturity [Abstract]
2018	1,035
2019	913
2020	829
2021	751
2022	452
Total	$ 3,980
NetWolves [Member]
Other intangible assets, net [Abstract]
Number of patents | Patent	1
Chinese Subsidiary [Member]
Other intangible assets, net [Abstract]
Number of patents | Patent	16
IT [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill acquired			14,375
Equipment [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill acquired			$ 3,096
Customer-Related [Member]
Other intangible assets, net [Abstract]
Costs	$ 5,831	5,831
Accumulated amortization	(2,501)	(1,768)
Intangible assets, net	$ 3,330	4,063
Useful life of patents	7 years
Patents and Technology [Member]
Other intangible assets, net [Abstract]
Costs	$ 2,331	2,363
Accumulated amortization	(1,260)	(1,061)
Intangible assets, net	1,071	1,302
Software [Member]
Other intangible assets, net [Abstract]
Costs	1,819	1,394
Accumulated amortization	(966)	(763)
Intangible assets, net	$ 853	$ 631
Useful life of patents	5 years
Software [Member] | Chinese Subsidiary [Member]
Other intangible assets, net [Abstract]
Number of copyright certificates | Certificate	14
Patent [Member]
Other intangible assets, net [Abstract]
Useful life of patents	10 years
Technology [Member]
Other intangible assets, net [Abstract]
Useful life of patents	8 years