SEGMENT DATA Long Lived Assets (Details) - USD ($) $ in Thousands		Mar. 31, 2016		Dec. 31, 2015		Mar. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Long-lived assets		$ 111,748	[1]	$ 108,522	[1]	$ 99,794	$ 114,335
BULGARIA [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]	5,672		5,602
CROATIA [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]	5,433		5,497
CZECH REPUBLIC [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]	40,500		39,907
ROMANIA [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]	22,489		20,873
SLOVAK REPUBLIC [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]	16,190		15,606
SLOVENIA [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]	15,260		15,082
Operating Segments [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]	105,544		102,567
Corporate [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]	$ 6,204		$ 5,955

[1] Reflects property, plant and equipment.