OPERATING SEGMENTS, Geographical Information of Long-Lived Assets Based on Physical Location (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	$ 60,552	$ 55,134
Belarus
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	46,844	41,652
Ukraine
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	4,482	4,392
Hungary
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	2,406	2,773
United States
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	2,072	2,001
Russia
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	2,043	2,196
Other
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	$ 2,705	$ 2,120