Segment Information - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2017 Segment Station
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	3
Television
Segment Reporting Information [Line Items]
Number of stations owned	54
Radio
Segment Reporting Information [Line Items]
Number of stations owned	49
Advertisements and Syndicates Radio Programming
Segment Reporting Information [Line Items]
Number of stations owned	350
Pulpo Media Inc
Segment Reporting Information [Line Items]
Business acquisition date	Jun. 18, 2014