Segment Information - Separate Financial Data for Each of Company's Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Net revenue	$ 97,156	$ 77,420	$ 257,986	$ 218,787
Cost of revenue	26,801	21,393	73,883	57,910
Direct operating expenses	35,617	28,702	99,174	84,160
Selling, general and administrative expenses	17,112	11,946	45,809	37,363
Depreciation and amortization	3,882	4,733	13,049	11,948
Operating income (loss)	7,585	(3,804)	(3,408)	(11,314)
Corporate expenses	6,930	13,292	29,989	35,836
Change in fair value of contingent consideration	(650)	(100)	(630)	621
Impairment charge		989	49,438	989
Foreign currency (gain) loss	(121)	269	120	1,274
Interest expense	(4,087)	(4,346)	(12,648)	(12,464)
Interest income	646	1,068	1,801	2,396
Dividend income			10	32
Realized gain (loss) on marketable securities	(1)	(33)	(110)	(94)
Gain (loss) on debt extinguishment			(91)	(1,556)
Income (loss) before income taxes	4,143	(7,115)	(14,446)	(23,000)
Capital expenditures	1,051	3,577	4,844	17,660
Total assets	$ 557,258		$ 557,258		$ 865,946
Percentage change in net revenue	25.00%		18.00%
Percentage change in cost of revenue	25.00%		28.00%
Percentage change in direct operating expenses	24.00%		18.00%
Percentage change in selling, general and administrative expenses	43.00%		23.00%
Percentage change in depreciation and amortization	(18.00%)		9.00%
Percentage change in corporate expenses	(48.00%)		(16.00%)
Percentage change in fair value of contingent consideration	550.00%
Percentage change in impairment charge	(100.00%)		(100.00%)
Percentage change in foreign currency (gain) loss			(91.00%)
Percentage change in operating income (loss)			(70.00%)
Percentage change in interest expense	(6.00%)		1.00%
Percentage change in interest income	(40.00%)		(25.00%)
Percentage change in dividend income			(69.00%)
Percentage change in realized gain (loss) on marketable securities	(97.00%)		17.00%
Percentage change in gain (loss) on debt extinguishment			(94.00%)
Percentage change in income (loss) before income taxes			(37.00%)
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 13,744	10,646	$ 26,071	27,406
Percentage change in segment operating profit (loss)	29.00%		(5.00%)
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Corporate expenses	$ 6,930	13,292	$ 29,989	35,836
Assets of discontinued operations
Segment Reporting Information [Line Items]
Total assets					313,124
Media
Segment Reporting Information [Line Items]
Cost of revenue	4,881	2,840	11,888	7,661
Direct operating expenses	29,193	24,110	82,405	72,004
Selling, general and administrative expenses	10,860	8,677	30,600	27,039
Depreciation and amortization	3,165	3,288	9,756	8,962
Capital expenditures	1,020	2,694	4,546	15,060
Total assets	$ 484,261		$ 484,261		449,928
Percentage change in cost of revenue	72.00%		55.00%
Percentage change in direct operating expenses	21.00%		14.00%
Percentage change in selling, general and administrative expenses	25.00%		13.00%
Percentage change in depreciation and amortization	(4.00%)		9.00%
Media \| Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 11,703	9,831	$ 20,152	28,948
Percentage change in segment operating profit (loss)	19.00%		(30.00%)
Media \| Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 59,802	48,746	$ 154,801	144,614
Percentage change in net revenue	23.00%		7.00%
Advertising Technology & Services
Segment Reporting Information [Line Items]
Cost of revenue	$ 21,920	18,553	$ 61,995	50,249
Direct operating expenses	6,424	4,592	16,769	12,156
Selling, general and administrative expenses	6,252	3,269	15,209	10,324
Depreciation and amortization	717	1,445	3,293	2,986
Capital expenditures	31	883	298	2,600
Total assets	$ 72,997		$ 72,997		$ 102,894
Percentage change in cost of revenue	18.00%		23.00%
Percentage change in direct operating expenses	40.00%		38.00%
Percentage change in selling, general and administrative expenses	91.00%		47.00%
Percentage change in depreciation and amortization	(50.00%)		10.00%
Advertising Technology & Services \| Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 2,041	815	$ 5,919	(1,542)
Percentage change in segment operating profit (loss)	150.00%
Advertising Technology & Services \| Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 37,354	$ 28,674	$ 103,185	$ 74,173
Percentage change in net revenue	30.00%		39.00%

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