Related-Party Transactions - Summary of Related-Party Balances with Univision and Other Related Parties (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Trade receivables	$ 71,406	$ 79,308
Other current assets	11,557	10,672
Intangible assets subject to amortization, net	16,772	22,598
Accounts payable	53,931	51,034
Direct operating expenses	119,412	125,242	$ 119,283
Amortization	16,648	16,273	16,411
Univision
Related Party Transaction [Line Items]
Trade receivables	4,350	4,530
Intangible assets subject to amortization, net	7,098	8,327
Accounts payable	2,029	1,830
Direct operating expenses	8,194	9,254	9,494
Amortization	1,229	1,228	2,043
Other
Related Party Transaction [Line Items]
Other current assets	274	274
Accounts payable	118	118
Related Parties
Related Party Transaction [Line Items]
Trade receivables	4,350	4,530
Other current assets	274	274
Intangible assets subject to amortization, net	7,098	8,327
Accounts payable	2,147	1,948
Direct operating expenses	8,194	9,254	9,494
Amortization	$ 1,229	$ 1,228	$ 2,043