Commitments and Contingencies	12 Months Ended
Dec. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	12. COMMITMENTS AND CONTINGENCIES The Company has non-cancelable agreements with certain media research and ratings providers, expiring at various dates through September 2024, to provide television and radio audience measurement services. Pursuant to these agreements, the Company is obligated to pay these providers a total of approximately $18.6 million. The 2020 and 2021 annual commitments total approximately $11.5 million and $6.0 million, respectively. The annual commitments beyond 2021 total approximately $1.1 million.

The entire disclosure for commitments and contingencies.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-URI http://asc.fasb.org/topic&trid=2127136

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-URI http://asc.fasb.org/topic&trid=2144648

Name:	us-gaap_CommitmentsAndContingenciesDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration