Segment Information - Separate Financial Data for Each of Company's Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net revenue	$ 273,381	$ 221,695	$ 512,387	$ 418,867
Cost of revenue	195,836	144,965	363,592	274,856
Direct operating expenses	33,065	29,596	62,927	57,419
Selling, general and administrative expenses	23,565	17,775	46,333	33,814
Depreciation and amortization	6,509	6,263	12,980	12,658
Operating income (loss)	544	13,441	7,212	17,607
Corporate expenses	12,042	8,520	22,544	17,244
Change in fair value of contingent consideration	1,123	976	(2,942)	6,076
Foreign currency (gain) loss	697	993	(259)	146
Other operating (gain) loss		(834)		(953)
Interest expense	(4,306)	(2,334)	(8,334)	(4,170)
Interest income	1,037	722	1,897	1,128
Dividend income	14	11	32	14
Realized gain (loss) on marketable securities	(29)		(61)
Gain (loss) on debt extinguishment			(1,556)
Income (loss) before income taxes	(2,740)	11,840	(810)	14,579
Capital expenditures	6,296	1,891	14,846	3,408
Total assets	$ 865,156		$ 865,156		$ 880,841
Percentage change in net revenue	23.00%		22.00%
Percentage change in direct operating expenses	12.00%		10.00%
Percentage change in selling, general and administrative expenses	33.00%		37.00%
Percentage change in depreciation and amortization	4.00%		3.00%
Percentage change in segment operating profit (loss)	(38.00%)		(34.00%)
Percentage change in corporate expenses	41.00%		31.00%
Percentage change in fair value of contingent consideration	15.00%
Percentage change in foreign currency (gain) loss	(30.00%)
Percentage change in other operating (gain) loss	(100.00%)		(100.00%)
Percentage change in operating income (loss)	(96.00%)		(59.00%)
Percentage change in interest expense	84.00%		100.00%
Percentage change in interest income	44.00%		68.00%
Percentage change in dividend income	27.00%		129.00%
Percentage change in income (loss) before income taxes	(123.00%)		(106.00%)
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 14,406	23,096	$ 26,555	40,120
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Corporate expenses	12,042	8,520	22,544	17,244
Digital
Segment Reporting Information [Line Items]
Cost of revenue	195,836	144,965	363,592	274,856
Direct operating expenses	10,283	7,843	18,293	14,976
Selling, general and administrative expenses	14,760	9,419	28,289	17,521
Depreciation and amortization	3,729	2,644	7,360	5,321
Capital expenditures	1,370	1,092	2,481	1,861
Total assets	$ 399,474		$ 399,474		408,027
Percentage change in cost of revenue	35.00%		32.00%
Percentage change in direct operating expenses	31.00%		22.00%
Percentage change in selling, general and administrative expenses	57.00%		61.00%
Percentage change in depreciation and amortization	41.00%		(38.00%)
Percentage change in segment operating profit (loss)	(44.00%)		(43.00%)
Digital | Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 5,288	9,507	$ 8,844	15,415
Digital | Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 229,896	174,378	$ 426,378	328,089
Percentage change in net revenue	32.00%		30.00%
Television
Segment Reporting Information [Line Items]
Direct operating expenses			$ 10,184	10,195
Selling, general and administrative expenses	$ 4,844	5,238
Depreciation and amortization	2,551	2,808	5,209	5,701
Capital expenditures	(2,555)	676	6,875	1,136
Total assets	$ 356,282		$ 356,282		363,904
Percentage change in direct operating expenses	4.00%		4.00%
Percentage change in selling, general and administrative expenses	(8.00%)		0.00%
Percentage change in depreciation and amortization	(9.00%)		(9.00%)
Percentage change in segment operating profit (loss)	(24.00%)		(19.00%)
Television | Operating Segments
Segment Reporting Information [Line Items]
Direct operating expenses	$ 15,024	14,488	$ 29,783	28,771
Operating income (loss)	7,524	9,839	15,079	18,573
Television | Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 29,943	32,373	$ 60,255	63,240
Percentage change in net revenue	(8.00%)		(5.00%)
Audio
Segment Reporting Information [Line Items]
Direct operating expenses	$ 7,758	7,265	$ 7,860	6,098
Selling, general and administrative expenses	3,961	3,118
Depreciation and amortization	229	811	411	1,636
Capital expenditures	2,371	123	5,490	411
Total assets	$ 109,400		$ 109,400		$ 108,910
Percentage change in direct operating expenses	7.00%		9.00%
Percentage change in selling, general and administrative expenses	27.00%		29.00%
Percentage change in depreciation and amortization	(72.00%)		(75.00%)
Percentage change in segment operating profit (loss)	(57.00%)		(57.00%)
Audio | Operating Segments
Segment Reporting Information [Line Items]
Direct operating expenses			$ 14,851	13,672
Operating income (loss)	$ 1,594	3,750	2,632	6,132
Audio | Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 13,542	$ 14,944	$ 25,754	$ 27,538
Percentage change in net revenue	(9.00%)		(6.00%)