INTANGIBLE ASSETS, NET (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

		Useful life	December 31,
		(years)	2017		2018
a.	Impaired cost:
	Acquired technology and license	5 - 10	$	19,857	$	19,857
	Customer relationship	4.5 - 9		4,750		4,750
				24,607		24,607
	Accumulated amortization:
	Acquired technology and license			18,008		18,655
	Customer relationship			4,599		4,699
				22,607		23,354
	Amortized cost		$	2,000	$	1,253

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

c. Expected amortization expenses are as follows:

Year ending December 31,
2019	$	352
2020		332
2021		284
2022		272
Thereafter		13
	$	1,253