FAIR VALUE MEASUREMENT - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
CSC Holdings | Related Party
Liabilities:
Notes payable to affiliate (Note 14)	$ 86,500	$ 90,500
Interest rate swap contracts | Other assets, long-term | Derivatives Not Designated as Hedging Instruments
Liabilities:
Asset Derivatives:	3,402	8,466
Fair Value Measured on a Recurring Basis | Fair Value, Inputs, Level 1 [Member] | Money market funds (a)
Assets:
Money market funds (a)	131,847	158,648
Fair Value Measured on a Recurring Basis | Fair Value, Inputs, Level 1 [Member] | Money market funds (a) | CSC Holdings
Assets:
Money market funds (a)	124,243	151,205
Fair Value Measured on a Recurring Basis | Fair Value, Inputs, Level 2 [Member] | Interest rate swap contracts
Liabilities:
Interest rate swap contracts		0
Fair Value Measured on a Recurring Basis | Fair Value, Inputs, Level 3 | Interest rate swap contracts
Liabilities:
Contingent consideration related to acquisitions	$ 5,703	$ 6,974