SEGMENT DATA Total Assets (Details) - USD ($) $ in Thousands		Jun. 30, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Assets	[1]	$ 1,462,542	$ 1,447,862
Operating Segments
Segment Reporting Information [Line Items]
Assets	[1]	1,339,558	1,426,990
Operating Segments | Bulgaria
Segment Reporting Information [Line Items]
Assets		139,415	135,593
Operating Segments | Czech Republic
Segment Reporting Information [Line Items]
Assets		713,393	758,479
Operating Segments | Romania
Segment Reporting Information [Line Items]
Assets		263,696	289,968
Operating Segments | Slovak Republic
Segment Reporting Information [Line Items]
Assets		141,352	150,806
Operating Segments | Slovenia
Segment Reporting Information [Line Items]
Assets		81,702	92,144
Corporate
Segment Reporting Information [Line Items]
Assets		$ 122,984	$ 20,872

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