OPERATING SEGMENTS, Geographical Information of Long-Lived Assets Based on Physical Location (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	$ 55,115	$ 55,134
Belarus
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	42,060	41,652
Ukraine
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	4,377	4,392
Hungary
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	2,523	2,773
Russia
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	2,121	2,196
United States
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	1,779	2,001
Other
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	$ 2,255	$ 2,120