Nature of Business (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended						0 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 segment	Sep. 30, 2013	Sep. 30, 2014 Common Class A [Member]	Dec. 31, 2013 Common Class A [Member]	Sep. 30, 2014 Common Class B [Member]	Dec. 31, 2013 Common Class B [Member]	Apr. 01, 2014 Cable Networks Acquisition [Member] item
Nature of Business
Number of operating segments			1
Nature of Business
Number of Spanish-language cable television networks whose assets are acquired									3
Assets acquired in cash			$ 101,891						$ 101,900
Numerator for earnings (loss) per common share calculation:
Net income (loss)	$ 663	$ (3,985)	$ 6,230	$ (6,936)
Denominator for earnings (loss) per common share calculation:
Weighted-average common shares, basic	42,383	42,172	42,301	27,426
Effect of dilutive securities:
Stock options and restricted stock	204		233
Weighted-average common shares, diluted	42,587	42,172	42,534	27,426
EPS
Basic (in dollars per share)	$ 0.02	$ (0.09)	$ 0.15	$ (0.25)
Diluted (in dollars per share)	$ 0.02	$ (0.09)	$ 0.15	$ (0.25)
Shares excluded from the computation of diluted income (loss) per common share	8,400,000		8,600,000
Par value of common stock (in dollars per share)					$ 0.0001	$ 0.0001	$ 0.0001	$ 0.0001