SEGMENT DATA Total Assets (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Assets	[1]	$ 1,649,926	$ 1,628,055
Assets held for sale		143,481	148,156
Bulgaria
Segment Reporting Information [Line Items]
Assets		150,696	155,885
Czech Republic
Segment Reporting Information [Line Items]
Assets		841,942	842,716
Romania
Segment Reporting Information [Line Items]
Assets		303,362	307,286
Slovak Republic
Segment Reporting Information [Line Items]
Assets		159,121	149,866
Total operating segments
Segment Reporting Information [Line Items]
Assets	[1]	1,455,121	1,455,753
Corporate
Segment Reporting Information [Line Items]
Assets		$ 51,324	$ 24,146

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