RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Related Party Transaction [Line Items]
Programming liabilities		$ 11,714		$ 11,714		$ 10,553
Other accounts payable and accrued liabilities		128		128		267
Accrued interest payable		1,084		1,084		1,103
Other non-current liabilities		$ 80,076		$ 80,076		80,000
AT&T [Member]
Related Party Transaction [Line Items]
Ownership percentage, related party		44.10%		44.10%
Purchases of programming		$ 4,697	$ 4,659	$ 10,330	$ 9,635
Interest expense		3,776	$ 4,615	7,558	$ 9,369
Programming liabilities		11,714		11,714		10,553
Accrued interest payable	[1]	1,084		1,084		1,103
Other non-current liabilities	[2]	33,465		33,465		33,465
Accounts Payable [Member] | AT&T [Member]
Related Party Transaction [Line Items]
Other accounts payable and accrued liabilities		$ 128		$ 128		$ 267

[1] Amount represents accrued Guarantee Fees which are not due. See Note 4, "Long-term Debt and Other Financing Arrangements".

[2] Amount represents Guarantee Fees related to the 2023 Euro Loan for which we had previously made an election to pay in kind.