The Company and Significant Accounting Policies - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended			0 Months Ended					3 Months Ended
	Nov. 25, 2014	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2011	May 31, 2013	Dec. 20, 2012	Dec. 30, 2014	Dec. 31, 2013	Jul. 27, 2010	Dec. 31, 2012	Jun. 30, 2012	Aug. 18, 2014	Dec. 16, 2013 Derivative
Accounting Policies [Line Items]
Non-cash stock-based compensation		$ 867,000	$ 708,000
Total unrecognized compensation expense employee stock option plans		1,500,000
Shares of dilutive securities not included in computation of diluted income per share		107,500	3,810,582
Amount approved under share purchase program	20,000,000											10,000,000
Additional share amount added to repurchase program	10,000,000
Principal amount repurchased				16,200,000
Gain (loss) on debt extinguishment				(400,000)
Interest Rate Swap Agreements
Accounting Policies [Line Items]
Interest rate swap inception date		Dec. 16, 2013
Number of forward-starting swap agreements													3
Aggregated notional amount of interest swap agreements													186,000,000
Derivative average Interest rate													2.73%
Derivative fixed Interest rate													5.23%
Interest rate swap effective date		Dec. 31, 2015
Interest rate swap expiration date		Dec. 31, 2018
Change in fair value of interest rate		(1,200,000)	(600,000)
Unrealized gains or losses included in accumulated other comprehensive income or loss		0
Fair value of interest rate		5,300,000
Term Loan And Revolving Credit Facility
Accounting Policies [Line Items]
Senior Secured debt					405,000,000	50,000,000
Maturity date of revolving credit facility					May 31, 2013	Dec. 20, 2016
Additional borrowing capacity					100,000,000
Term Loan
Accounting Policies [Line Items]
2012 Credit Facility, obligations						20,000,000
Period of revolving credit facility						4 years
Interest rate on borrowings under 2013 Credit Facility		if a Base Rate Loan, one and one half percent (1.50%) per annum and (ii) if a LIBOR Rate Loan, two and one half percent (2.50%) per annum;
Term Loan | Base Rate Margin
Accounting Policies [Line Items]
Variable interest rate basis spread on debt		1.50%
Term Loan | LIBOR Margin
Accounting Policies [Line Items]
Variable interest rate basis spread on debt		2.50%
Letter of Credit
Accounting Policies [Line Items]
2012 Credit Facility, obligations						3,000,000
Term Loan B Facility
Accounting Policies [Line Items]
Principal amount repurchased								324,000,000
Gain (loss) on debt extinguishment		(29,700,000)
Senior Secured debt					375,000,000
Repayment of loans							20,000,000	10,000,000
Senior Secured Revolving Credit Facility
Accounting Policies [Line Items]
Senior Secured debt					30,000,000
Term Loan A
Accounting Policies [Line Items]
Senior Secured debt					20,000,000
2012 Credit Facility
Accounting Policies [Line Items]
2012 Credit Facility, obligations						30,000,000
Period of revolving credit facility						4 years
Two Thousand Thirteen Revolving Credit Facility
Accounting Policies [Line Items]
Effective interest rate		3.50%
Interest rate on borrowings under 2013 Credit Facility		if a Base Rate Loan, one and one half percent (1.50%) per annum and (B) if a LIBOR Rate Loan, two and one half percent (2.50%) per annum;
Percentage of repricing fee		1.00%
Certain customary events of default, number of business days to default in the payment of interest on borrowings		3 days
Certain customary events of default, number of days default continue for compliance with other agreement		30 days
Certain customary events of default, number of days default continue for financial statement delivery obligations		10 days
Certain customary events of default, indebtedness aggregate amount		15,000,000
Certain customary events of default, failure in payment of final judgments aggregate amount		15,000,000
Certain customary events of default, failure in payment of final judgments aggregate amount period		30 days
Two Thousand Thirteen Revolving Credit Facility | Base Rate Margin
Accounting Policies [Line Items]
Variable interest rate basis spread on debt		1.50%
Two Thousand Thirteen Revolving Credit Facility | LIBOR Margin
Accounting Policies [Line Items]
Variable interest rate basis spread on debt		2.50%
Two Thousand Thirteen Revolving Credit Facility | Term Loan B Facility
Accounting Policies [Line Items]
Redemption price on principal amount with net proceeds, accrued and unpaid expense								106.563%
Maturity date of revolving credit facility		May 31, 2020
Period considered for applicability of repricing fees		6 months
Carrying value of term loan		339,400,000
Estimated fair value of term loan		339,400,000
Two Thousand Thirteen Revolving Credit Facility | Senior Secured Revolving Credit Facility
Accounting Policies [Line Items]
Maturity date of revolving credit facility		May 31, 2018
Two Thousand Thirteen Revolving Credit Facility | Term Loan A
Accounting Policies [Line Items]
Maturity date of revolving credit facility		Aug. 01, 2013
8.75% Senior Secured First Lien Notes
Accounting Policies [Line Items]
Interest rate of notes								8.75%	8.75%
Aggregate principal amount of Senior Secured First Lien Notes									400,000,000
Issuance price as percentage of principal amount									98.722%
Notes maturity date		Aug. 01, 2017
Date of first required payment		Feb. 01, 2011
Net proceeds from the sale of notes									388,000,000
Discount on bond									5,000,000
Fees for sale of notes									7,000,000
Redemption of Notes upon change in control, amount as percentage of principal amount including interest		101.00%
Redemption of Notes declaration of acceleration written percentage of principal amount		25.00%
8.75% Senior Secured First Lien Notes | Debt Instrument, Redemption, Period One
Accounting Policies [Line Items]
Issuance price as percentage of principal amount		10.00%
Redemption price on principal amount with net proceeds, accrued and unpaid expense		103.00%
8.75% Senior Secured First Lien Notes | Debt Instrument, Redemption, Period One | Redemption Term Four
Accounting Policies [Line Items]
Redemption price on principal amount with net proceeds, accrued and unpaid expense		106.563%
8.75% Senior Secured First Lien Notes | Debt Instrument, Redemption, Period Two
Accounting Policies [Line Items]
Issuance price as percentage of principal amount		35.00%
Redemption price on principal amount with net proceeds, accrued and unpaid expense		108.75%
Rate on principal amount outstanding		65.00%
Redemption closing date		60 days
8.75% Senior Secured First Lien Notes | Debt Instrument, Redemption, Period Two | Redemption Term Four
Accounting Policies [Line Items]
Redemption price on principal amount with net proceeds, accrued and unpaid expense		104.375%
8.75% Senior Secured First Lien Notes | Debt Instrument, Redemption, Period Three
Accounting Policies [Line Items]
Redemption price on principal amount with net proceeds, accrued and unpaid expense		100.00%
8.75% Senior Secured First Lien Notes | Debt Instrument, Redemption, Period Three | Redemption Term Four
Accounting Policies [Line Items]
Redemption price on principal amount with net proceeds, accrued and unpaid expense		102.188%
8.75% Senior Secured First Lien Notes | Debt Instrument, Redemption, Period Four | Redemption Term Four
Accounting Policies [Line Items]
Redemption price on principal amount with net proceeds, accrued and unpaid expense		100.00%
Notes Payable to Banks
Accounting Policies [Line Items]
Principal amount repurchased										40,000,000	20,000,000
Gain (loss) on debt extinguishment										(2,500,000)	(1,200,000)
Redemption price percentage of the principal amount for redeemed notes										103.00%	103.00%
Class A common stock
Accounting Policies [Line Items]
Stock Repurchased And Retired During Period Shares		2,500,000
Average price of repurchased shares		$ 5.08
Stock Repurchased And Retired During Period Value		12,500,000
Employee Stock Options
Accounting Policies [Line Items]
Weighted average period for unrecognized compensation expense related to grants of stock options		1 year 7 months 6 days
Restricted Stock Units
Accounting Policies [Line Items]
Weighted average period for unrecognized compensation expense related to grants of stock options		1 year 8 months 12 days
Total unrecognized compensation expense related to grants of restricted stock and restricted stock units		2,400,000
Minimum
Accounting Policies [Line Items]
Stock options vesting period		1 year
Minimum | Restricted Stock Units
Accounting Policies [Line Items]
Stock options vesting period		1 year
Maximum
Accounting Policies [Line Items]
Stock options vesting period		4 years
Maximum | Restricted Stock Units
Accounting Policies [Line Items]
Stock options vesting period		4 years
Univision
Accounting Policies [Line Items]
Expiry year of long-term affiliation agreements		2021
Renewal period of affiliation agreements		2 years
Affiliate advertising minutes per hour for which entity has right to sell		6 minutes
Payment of sales representation fees to television stations		2,200,000	2,300,000
Period to grant television station for terms of retransmission consent agreements		6 years
Retransmission consent agreements expiring date		Dec. 31, 2014
Amount due from television stations for carriage		$ 1,100,000
Unimas
Accounting Policies [Line Items]
Affiliate advertising minutes per hour for which entity has right to sell		4 minutes 30 seconds