DEBT, Repurchases of Cablevision Senior Notes (Details) (Senior Notes, Senior 5.875% Notes due September 2022, USD $) In Thousands, unless otherwise specified	1 Months Ended		12 Months Ended
	Oct. 31, 2014	Jan. 31, 2014	Dec. 31, 2013
Repurchases of Cablevision Senior Notes [Abstract]
Gain (loss) on extinguishment of debt			$ 1,119
Unamortized deferred financing costs and discounts written off			517
Cablevision Systems Corporation
Repurchases of Cablevision Senior Notes [Abstract]
Aggregate principal amount repurchased/redeemed	9,200	27,831	63,945
Gain (loss) on extinguishment of debt	934
Unamortized deferred financing costs and discounts written off	$ 1,436