LONG-TERM DEBT AND OTHER FINANCING ARRANGEMENTS Credit Facility (Details) RON in Millions, CZK in Millions		3 Months Ended	12 Months Ended
		Dec. 31, 2017 USD ($) Rate	Dec. 31, 2017 USD ($)	Jan. 01, 2018 USD ($)	Dec. 31, 2017 RON	Dec. 31, 2017 CZK	Dec. 31, 2016 USD ($)
Line of Credit Facility [Line Items]
Long-term debt		$ 1,079,187,000	$ 1,079,187,000				$ 999,209,000
Credit facilities	[1],[2],[3]	0	0				0
Capital leases		9,487,000	9,487,000				3,427,000
Total credit facilites and capital leases		9,487,000	9,487,000				3,427,000
Less current maturities		(2,960,000)	(2,960,000)				(1,228,000)
Total non current credit facilites an capital leasesd Capital Leases		$ 6,527,000	$ 6,527,000				2,199,000
CME NV and CME BV [Member]
Line of Credit Facility [Line Items]
Outstanding Shares Pledged, Percentage		100.00%	100.00%		100.00%	100.00%
BMG Bank Mendes Gans [Member]
Line of Credit Facility [Line Items]
Credit facilities		$ 0	$ 0				0
Line of credit facility cash pooling arrangment deposit		12,400,000	12,400,000				$ 16,400,000
Ceska Sporitelna [Member] | CET 21 [Member]
Line of Credit Facility [Line Items]
Credit facilities		6,000,000	$ 6,000,000			CZK 127.2
Debt Instrument, Basis Spread on Variable Rate			0.95%
Line of Credit Facility, Maximum Borrowing Capacity		27,000,000	$ 27,000,000			CZK 575.0
Factoring Fee, Percentage			0.19%
Global Funds IFN S.A. [Member] | Pro TV [Member]
Line of Credit Facility [Line Items]
Credit facilities		25,600,000	$ 25,600,000		RON 99.8
Debt Instrument, Basis Spread on Variable Rate			6.00%
Factoring Fee, Percentage			4.00%
2021 Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Long-term debt		$ 0	$ 0
Stated interest rate	[4]	8.69%	8.69%		8.69%	8.69%
Line of Credit Facility, Maximum Borrowing Capacity		$ 115,000,000	$ 115,000,000
2021 Revolving Credit Facility [Member] | CME NV and CME BV [Member]
Line of Credit Facility [Line Items]
Outstanding Shares Pledged, Percentage		100.00%	100.00%		100.00%	100.00%
Alternative Base Rate [Member] | 2021 Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate			6.00%
Base Rate [Member] | 2021 Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate			7.00%
Stated interest rate		1.00%	1.00%		1.00%	1.00%
Minimum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.10%
Minimum [Member] | 2021 Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate | Rate		6.00%
Debt Instrument, Reference Rate for Variable Rate | Rate		1.00%
Maximum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.90%
Maximum [Member] | 2021 Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate | Rate		9.00%
Subsequent Event [Member] | 2021 Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$ 50,000,000.0

[1] As at December 31, 2017 there were RON 99.8 million (approximately US$ 25.6 million) of receivables factored under a factoring framework agreement with Global Funds IFN S.A that were derecognized from the consolidated balance sheet. Under this facility, receivables from certain customers in Romania may be factored on a non-recourse basis. The facility has a factoring fee of 4.0% of any factored receivable and bears interest at 6.0% per annum from the date the receivables are factored to the due date of the factored receivable.

[2] As at December 31, 2017, there were CZK 127.2 million (approximately US$ 6.0 million) of receivables factored on a non-recourse basis under a CZK 575.0 million (approximately US$ 27.0 million) factoring framework agreement with Factoring Ceska Sporitelna (“FCS”) that were derecognized from the consolidated balance sheet. Under this facility, up to CZK 575.0 million (approximately US$ 27.0 million) of receivables from certain customers in the Czech Republic may be factored on a recourse or non-recourse basis. The facility has a factoring fee of 0.19% of any factored receivable and bears interest at one-month PRIBOR plus 0.95% per annum for the period that receivables are factored and outstanding.

[3] We have a cash pooling arrangement with Bank Mendes Gans (“BMG”), a subsidiary of ING Bank N.V. (“ING”), which enables us to receive credit throughout the group in respect of cash balances which our subsidiaries deposit with BMG. Cash deposited by our subsidiaries with BMG is pledged as security against the drawings of other subsidiaries up to the amount deposited.As at December 31, 2017, we had deposits of US$ 12.4 million in and no drawings on the BMG cash pool. Interest is earned on deposits at the relevant money market rate. As at December 31, 2016, we had deposits of US$ 16.4 million in and no drawings on the BMG cash pool.

[4] (2) Based on the three month LIBOR of 1.69% as at December 31, 2017.