Segment Data - Separate Financial Data for Each of Company's Operating Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net revenue	$ 364,948	$ 297,043	$ 323,990
Cost of revenue	102,196	77,214	70,586
Direct operating expenses	136,262	113,231	109,320
Selling, general and administrative expenses	62,868	49,761	46,988
Depreciation and amortization	16,821	16,392	15,647
Operating income (loss)	(51,980)	(26,496)	30,578
Corporate expenses	37,498	50,294	49,404
Change in fair value of contingent consideration	(629)	821	(1,800)
Impairment charge	61,220	13,267	1,600
Foreign currency (gain) loss	692	1,950	1,244
Other operating (gain) loss		609	423
Interest expense	(16,472)	(16,833)	(10,536)
Interest income	2,458	3,405	2,740
Dividend income	10	35	20
Realized gain (loss) on marketable securities	(110)	(93)	(532)
Gain (loss) on debt extinguishment	(91)	(1,556)
Income (loss) before income taxes from continuing operations	(66,185)	(41,538)	22,270
Capital expenditures	$ 7,461	$ 24,851	9,513
Percentage change in net revenue	23.00%	(8.00%)
Percentage change in cost of revenue	32.00%	9.00%
Percentage change in direct operating expenses	20.00%	4.00%
Percentage change in selling, general and administrative expenses	26.00%	6.00%
Percentage change in depreciation and amortization	3.00%	5.00%
Percentage change in corporate expenses	(25.00%)	2.00%
Percentage change in impairment charge	361.00%	729.00%
Percentage change in foreign currency (gain) loss	(65.00%)	57.00%
Percentage change in other operating (gain) loss	(100.00%)	44.00%
Percentage change in operating income (loss)	96.00%	(187.00%)
Percentage change in interest expense	(2.00%)	60.00%
Percentage change in interest income	(28.00%)	24.00%
Percentage change in dividend income	(71.00%)	75.00%
Percentage change in realized gain (loss) on marketable securities	18.00%	(83.00%)
Percentage change in gain (loss) on debt extinguishment	(94.00%)
Percentage change in income (loss) before income taxes	59.00%
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 46,801	$ 40,445	81,449
Percentage change in segment operating profit (loss)	16.00%	(50.00%)
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Corporate expenses	$ 37,498	$ 50,294	49,404
Media
Segment Reporting Information [Line Items]
Cost of revenue	16,726	10,952	10,580
Direct operating expenses	110,988	96,925	94,742
Selling, general and administrative expenses	42,759	36,000	36,327
Depreciation and amortization	12,891	11,975	13,661
Capital expenditures	$ 7,089	$ 21,208	6,975
Percentage change in cost of revenue	53.00%	4.00%
Percentage change in direct operating expenses	15.00%	2.00%
Percentage change in selling, general and administrative expenses	19.00%	(1.00%)
Percentage change in depreciation and amortization	8.00%	(12.00%)
Media \| Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 38,697	$ 40,416	75,388
Percentage change in segment operating profit (loss)	(4.00%)	(46.00%)
Media \| Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 222,061	$ 196,268	230,698
Percentage change in net revenue	13.00%	(15.00%)
Advertising Technology & Services
Segment Reporting Information [Line Items]
Cost of revenue	$ 85,470	$ 66,262	60,006
Direct operating expenses	25,274	16,306	14,578
Selling, general and administrative expenses	20,109	13,761	10,661
Depreciation and amortization	3,930	4,417	1,986
Capital expenditures	$ 372	$ 3,643	2,538
Percentage change in cost of revenue	29.00%	10.00%
Percentage change in direct operating expenses	55.00%	12.00%
Percentage change in selling, general and administrative expenses	46.00%	29.00%
Percentage change in depreciation and amortization	(11.00%)	122.00%
Advertising Technology & Services \| Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 8,104	$ 29	6,061
Percentage change in segment operating profit (loss)		(100.00%)
Advertising Technology & Services \| Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 142,887	$ 100,775	$ 93,292
Percentage change in net revenue	42.00%	8.00%

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