SEGMENT DATA Capital Expenditure (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Capital expenditures	$ 14,698	$ 11,287
BULGARIA [Member]
Segment Reporting Information [Line Items]
Capital expenditures	2,019	988
CROATIA [Member]
Segment Reporting Information [Line Items]
Capital expenditures	862	1,080
CZECH REPUBLIC [Member]
Segment Reporting Information [Line Items]
Capital expenditures	5,088	2,863
ROMANIA [Member]
Segment Reporting Information [Line Items]
Capital expenditures	2,966	2,334
SLOVAK REPUBLIC [Member]
Segment Reporting Information [Line Items]
Capital expenditures	900	824
SLOVENIA [Member]
Segment Reporting Information [Line Items]
Capital expenditures	1,759	1,715
Operating Segments [Member]
Segment Reporting Information [Line Items]
Capital expenditures	13,594	9,804
Corporate [Member]
Segment Reporting Information [Line Items]
Capital expenditures	$ 1,104	$ 1,483