SEGMENT DATA Total Assets (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Assets	[1]	$ 1,522,292	$ 1,628,055
Assets held for sale (Note 3)		142,623	148,156
Bulgaria
Segment Reporting Information [Line Items]
Assets		136,462	155,885
Czech Republic
Segment Reporting Information [Line Items]
Assets		773,098	842,716
Romania
Segment Reporting Information [Line Items]
Assets		294,633	307,286
Slovak Republic
Segment Reporting Information [Line Items]
Assets		150,674	149,866
Total operating segments
Segment Reporting Information [Line Items]
Assets	[1]	1,354,867	1,455,753
Corporate
Segment Reporting Information [Line Items]
Assets		$ 24,802	$ 24,146

[1] (1) Segment assets exclude any intercompany balances.