Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2023 USD ($) Advertiser AdvertisingCustomer shares	Dec. 31, 2022 USD ($) Advertiser shares	Dec. 31, 2021 USD ($) shares
Accounting Policies [Line Items]
Cash and cash equivalents	$ 105,739	$ 110,691	$ 185,094
Restricted cash	770	753	749
Available for sale debt securities	13,172	44,528
Goodwill	90,672	86,991	71,708
Intangible assets subject to amortization, net	51,784	61,811
Property and equipment, net	$ 71,475	61,362
Number of advertisers represent more than five percent of trade receivables \| Advertiser	0
Number of advertising customer represented more than five percent of revenue \| AdvertisingCustomer	0
Estimated losses for bad debts	$ 2,200	3,400	3,500
Bad debts actually charged off	$ 3,100	$ 3,300	$ 900
Percentage of tax benefit recognized	50.00%
Stock options granted \| shares	0	0	0
Shares of dilutive securities not included in computation of diluted earnings per share \| shares	2,145,439	623,152	465,993
Assets held for sale	$ 301
Trade Receivables \| Customer Concentration Risk \| Largest Advertisers
Accounting Policies [Line Items]
Number of largest advertisers \| Advertiser	5	5
Concentration risk percentage	7.00%	2.00%
Revenue \| Customer Concentration Risk \| Largest Advertisers
Accounting Policies [Line Items]
Concentration risk percentage	13.00%	14.00%	13.00%
Revenue \| Customer Concentration Risk \| Meta
Accounting Policies [Line Items]
Concentration risk percentage	53.00%	49.00%
Revenue \| Customer Concentration Risk \| Meta \| Commercial Partner
Accounting Policies [Line Items]
Concentration risk percentage	53.00%	49.00%	55.00%
Digital Segment
Accounting Policies [Line Items]
Goodwill	$ 50,100
Intangible assets subject to amortization, net	47,300
Property and equipment, net	$ 8,200
Digital Segment \| Revenue \| Customer Concentration Risk \| Meta
Accounting Policies [Line Items]
Concentration risk percentage	63.00%	63.00%
Outside the United States
Accounting Policies [Line Items]
Cash and cash equivalents	$ 87,300	$ 89,700
Boston Market
Accounting Policies [Line Items]
Agreement amount to sell building	1,300
Assets held for sale	$ 300

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