CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current Assets:
Accounts receivable, trade allowance for doubtful accounts	$ 5,604	$ 6,039
Property, plant and equipment, accumulated depreciation	9,559,157	9,625,348
Amortizable intangible assets, accumulated amortization	62,045	60,310
Deferred financing costs, accumulated amortization	$ 8,930	$ 8,150
Stockholders' Deficiency:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
CNYG Class A Common Stock
Stockholders' Deficiency:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	800,000,000	800,000,000
Common stock, shares issued (in shares)	305,148,220	304,196,703
Common stock, shares outstanding (in shares)	222,188,952	222,572,210
Treasury stock (in shares)	82,959,268	81,624,493
CNYG Class B Common Stock
Stockholders' Deficiency:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	320,000,000	320,000,000
Common stock, shares issued (in shares)	54,137,673	54,137,673
Common stock, shares outstanding (in shares)	54,137,673	54,137,673
RMG Class A Common Stock
Stockholders' Deficiency:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	600,000,000	600,000,000
Common stock, shares issued (in shares)	0	0
RMG Class B Common Stock
Stockholders' Deficiency:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	160,000,000	160,000,000
Common stock, shares issued (in shares)	0	0
CSC Holdings, LLC
Current Assets:
Accounts receivable, trade allowance for doubtful accounts	$ 5,604	$ 6,039
Property, plant and equipment, accumulated depreciation	9,559,157	9,625,348
Amortizable intangible assets, accumulated amortization	62,045	60,310
Deferred financing costs, accumulated amortization	$ 8,930	$ 8,150
Stockholders' Deficiency:
Other member's equity, membership units issued (in shares)	17,631,479	17,631,479
Other member's equity, membership units outstanding (in shares)	17,631,479	17,631,479