SEGMENT DATA Capital Expenditure (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Capital expenditures	$ 33,517	$ 28,685	$ 30,118
BULGARIA
Segment Reporting Information [Line Items]
Capital expenditures	3,517	2,627	2,798
CROATIA
Segment Reporting Information [Line Items]
Capital expenditures	3,215	2,701	2,574
CZECH REPUBLIC
Segment Reporting Information [Line Items]
Capital expenditures	10,982	9,139	7,727
ROMANIA
Segment Reporting Information [Line Items]
Capital expenditures	5,794	4,686	5,194
Slovak Republic [Member]
Segment Reporting Information [Line Items]
Capital expenditures	2,921	2,240	1,590
Slovenia [Member]
Segment Reporting Information [Line Items]
Capital expenditures	3,197	3,502	4,018
Total operating segments [Member]
Segment Reporting Information [Line Items]
Capital expenditures	29,626	24,895	23,901
Corporate [Member]
Segment Reporting Information [Line Items]
Capital expenditures	$ 3,891	$ 3,790	$ 6,217