SEGMENT DATA Reconciliation (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total OIBDA:										$ 222,674	$ 179,767	$ 141,547
Depreciation of property, plant and equipment										(32,933)	(31,261)	(27,529)
Amortization of broadcast licenses and other intangibles										(9,002)	(8,592)	(8,270)
Other items (1)	[1]									(3,152)	0	0
Operating income		$ 80,792	$ 22,197	$ 50,017	$ 24,581	$ 65,535	$ 16,066	$ 46,413	$ 11,900	177,587	139,914	105,748
Interest expense (Note 15)										(49,106)	(83,188)	(126,378)
Loss on extinguishment of debt										(415)	(101)	(150,158)
Other non-operating (expense) / income, net (Note 16)										(3,173)	16,942	(2,252)
Income / (loss) before tax										124,893	73,567	(173,040)
BULGARIA
Segment Reporting Information [Line Items]
Total OIBDA:										21,620	16,241	12,004
CZECH REPUBLIC
Segment Reporting Information [Line Items]
Total OIBDA:										94,576	82,652	76,466
ROMANIA
Segment Reporting Information [Line Items]
Total OIBDA:										85,737	73,418	61,394
SLOVAKIA
Segment Reporting Information [Line Items]
Total OIBDA:										27,941	23,845	15,598
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total OIBDA:										34	(3)	25
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total OIBDA:										252,424	210,416	170,161
Corporate [Member]
Segment Reporting Information [Line Items]
Total OIBDA:										$ (29,750)	$ (30,649)	$ (28,614)

[1] (1) Other items consists solely of expense related to the accelerated vesting of RSUs with performance conditions in accordance with the terms of the corresponding award agreement following the completion of sale of the Company's Croatian operations on such date. See Note 17, "Stock-based Compensation".