DIVIDENDS (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		1 Months Ended	3 Months Ended		3 Months Ended		3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 Restricted Stock [Member]	Mar. 31, 2013 Dividend Declared 2013 Q1 [Member] CNYG Class A Common Stock [Member]	Feb. 26, 2013 Dividend Declared 2013 Q1 [Member] CNYG Class A Common Stock [Member]	Mar. 31, 2013 Dividend Declared 2013 Q1 [Member] CNYG Class B Common Stock [Member]	Feb. 26, 2013 Dividend Declared 2013 Q1 [Member] CNYG Class B Common Stock [Member]	Mar. 31, 2013 CSC Holdings, LLC [Member]
Dividends [Abstract]
Dividend, declaration date				Feb. 26, 2013		Feb. 26, 2013
Dividend per share (in dollars per share)					$ 0.15		$ 0.15
Dividend, payment date				Apr. 03, 2013		Apr. 03, 2013
Dividend, record date				Mar. 15, 2013		Mar. 15, 2013
Dividends paid by Cablevision	$ 3,074	$ 46,406	$ 3,074
Maximum dividends to be paid when, and if, restrictions lapse on restricted shares outstanding	3,660
Distributions paid to Cablevision								$ 74,875