Segment Information - Separate Financial Data for Each of Company's Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Net revenue	$ 100,735	$ 82,654	$ 192,586	$ 160,830
Cost of revenue	38,010	24,424	71,482	47,082
Direct operating expenses	37,712	31,756	73,214	63,557
Selling, general and administrative expenses	16,453	14,363	31,959	28,697
Depreciation and amortization	3,027	4,428	6,504	9,167
Segment operating profit (loss)	(848)	(3,344)	(53,618)	(10,993)
Corporate expenses	6,375	10,811	14,163	23,059
Change in fair value of contingent consideration	0	240	0	20
Impairment charge	0	0	23,673	0
Loss on lease abandonment	0	0	25,191	0
Foreign currency (gain) loss	6	(24)	18	241
Interest expense	(4,037)	(4,118)	(7,700)	(8,561)
Interest income	619	577	1,224	1,155
Dividend income	1	0	1	10
Realized gain (loss) on marketable securities	3	4	4	(109)
Gain (loss) on debt extinguishment	(38)	(51)	(38)	(91)
Income (loss) before income taxes	(4,300)	(6,932)	(60,127)	(18,589)
Capital expenditures	$ 2,271	1,723	$ 4,655	3,793
Percentage change in net revenue	22.00%		20.00%
Percentage change in cost of revenue	56.00%		52.00%
Percentage change in direct operating expenses	19.00%		15.00%
Percentage change in selling, general and administrative expenses	15.00%		11.00%
Percentage change in depreciation and amortization	(32.00%)		(29.00%)
Percentage change in corporate expenses	(41.00%)		(39.00%)
Percentage change in fair value of contingent consideration	(100.00%)		(100.00%)
Percentage change in foreign currency (gain) loss			(93.00%)
Percentage change in operating income (loss)	(75.00%)		388.00%
Percentage change in interest expense	(2.00%)		(10.00%)
Percentage change in interest income	7.00%		6.00%
Percentage change in dividend income			(90.00%)
Percentage change in realized gain (loss) on marketable securities	(25.00%)
Percentage change in gain (loss) on debt extinguishment	(25.00%)		(58.00%)
Percentage change in income (loss) before income taxes	(38.00%)		223.00%
Operating Segments
Segment Reporting Information [Line Items]
Segment operating profit (loss)	$ 5,533	7,683	$ 9,427	12,327
Percentage change in segment operating profit (loss)	(28.00%)		(24.00%)
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Corporate expenses	$ 6,375	10,811	$ 14,163	23,059
Media
Segment Reporting Information [Line Items]
Cost of revenue	4,651	4,129	7,917	7,007
Direct operating expenses	26,795	26,140	53,345	52,763
Selling, general and administrative expenses	11,006	9,764	21,811	19,741
Depreciation and amortization	2,607	3,304	5,577	6,591
Capital expenditures	$ 1,970	1,532	$ 4,330	3,526
Percentage change in cost of revenue	13.00%		13.00%
Percentage change in direct operating expenses	3.00%		1.00%
Percentage change in selling, general and administrative expenses	13.00%		10.00%
Percentage change in depreciation and amortization	(21.00%)		(15.00%)
Media \| Operating Segments
Segment Reporting Information [Line Items]
Segment operating profit (loss)	$ 354	5,896	$ (2,260)	8,897
Percentage change in segment operating profit (loss)	(94.00%)
Media \| Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 45,413	49,233	$ 86,390	94,999
Percentage change in net revenue	(8.00%)		(9.00%)
Advertising Technology & Services
Segment Reporting Information [Line Items]
Net revenue	$ 55,322	33,421	$ 106,196	65,831
Cost of revenue	33,359	20,295	63,565	40,075
Direct operating expenses	10,917	5,616	19,869	10,794
Selling, general and administrative expenses	5,447	4,599	10,148	8,956
Depreciation and amortization	420	1,124	927	2,576
Capital expenditures	$ 301	191	$ 325	267
Percentage change in net revenue	66.00%		61.00%
Percentage change in cost of revenue	64.00%		59.00%
Percentage change in direct operating expenses	94.00%		84.00%
Percentage change in selling, general and administrative expenses	18.00%		13.00%
Percentage change in depreciation and amortization	(63.00%)		(64.00%)
Advertising Technology & Services \| Operating Segments
Segment Reporting Information [Line Items]
Segment operating profit (loss)	$ 5,179	$ 1,787	$ 11,687	$ 3,430
Percentage change in segment operating profit (loss)	190.00%		241.00%

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