SEGMENTS INFORMATION (Physical Location and Values of Long-Lived Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	$ 167,359	$ 165,259
Belarus
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	73,989	75,984
Ukraine
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	29,577	24,652
United States
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	17,697	15,637
Russia
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	15,249	17,980
India
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	6,553	7,443
Poland
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	4,803	5,029
Hungary
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	4,684	5,201
China
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	2,621	3,036
Mexico
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	2,591	2,353
Other
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	$ 9,595	$ 7,944