SEGMENT DATA Long Lived Assets (Details) - USD ($) $ in Thousands		Mar. 31, 2017		Dec. 31, 2016		Mar. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Long-lived assets		$ 108,977	[1]	$ 109,089	[1]	$ 111,748	$ 108,522
BULGARIA [Member]
Segment Reporting Information [Line Items]
Long-lived assets		6,152		6,280
CROATIA [Member]
Segment Reporting Information [Line Items]
Long-lived assets		5,825		5,832
CZECH REPUBLIC [Member]
Segment Reporting Information [Line Items]
Long-lived assets		39,056		39,529
ROMANIA [Member]
Segment Reporting Information [Line Items]
Long-lived assets		24,111		22,796
SLOVAK REPUBLIC [Member]
Segment Reporting Information [Line Items]
Long-lived assets		15,230		15,326
SLOVENIA [Member]
Segment Reporting Information [Line Items]
Long-lived assets		13,819		14,177
Operating Segments [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]	104,193		103,940
Corporate [Member]
Segment Reporting Information [Line Items]
Long-lived assets		$ 4,784		$ 5,149

[1] (1) Reflects property, plant and equipment.