Segment Information - Separate Financial Data for Each of Company's Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Net revenue	$ 82,654	$ 73,719	$ 160,830	$ 141,366
Cost of revenue	24,424	19,649	47,082	36,516
Direct operating expenses	31,756	28,856	63,557	55,458
Selling, general and administrative expenses	14,363	12,610	28,697	25,417
Depreciation and amortization	4,428	3,713	9,167	7,214
Operating income (loss)	(3,344)	(3,964)	(10,993)	(7,510)
Corporate expenses	10,811	12,042	23,059	22,544
Change in fair value of contingent consideration	240	21	20	721
Foreign currency (gain) loss	(24)	792	241	1,006
Interest expense	(4,118)	(4,195)	(8,561)	(8,118)
Interest income	577	720	1,155	1,328
Dividend income		14	10	32
Realized gain (loss) on marketable securities	4	(29)	(109)	(61)
Gain (loss) on debt extinguishment	(51)		(91)	(1,556)
Income (loss) before income taxes	(6,932)	(7,454)	(18,589)	(15,885)
Capital expenditures	1,723	5,783	3,793	13,689
Total assets	$ 569,606		$ 569,606		$ 865,946
Percentage change in net revenue	12.00%		14.00%
Percentage change in direct operating expenses	10.00%		15.00%
Percentage change in selling, general and administrative expenses	14.00%		13.00%
Percentage change in depreciation and amortization	19.00%		27.00%
Percentage change in segment operating profit (loss)	(14.00%)		(26.00%)
Percentage change in corporate expenses	(10.00%)		2.00%
Percentage change in fair value of contingent consideration	1043.00%		(97.00%)
Percentage change in foreign currency (gain) loss			(76.00%)
Percentage change in operating income (loss)	(16.00%)		46.00%
Percentage change in interest expense	(2.00%)		5.00%
Percentage change in interest income	(20.00%)		(13.00%)
Percentage change in dividend income	(100.00%)		(69.00%)
Percentage change in realized gain (loss) on marketable securities			79.00%
Percentage change in gain (loss) on debt extinguishment			(94.00%)
Percentage change in income (loss) before income taxes	(7.00%)		17.00%
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 7,683	8,891	$ 12,327	16,761
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Corporate expenses	10,811	12,042	23,059	22,544
Assets of discontinued operations
Segment Reporting Information [Line Items]
Total assets					313,124
Digital
Segment Reporting Information [Line Items]
Cost of revenue	24,424	19,649	47,082	36,516
Direct operating expenses	7,427	6,074	14,385	10,824
Selling, general and administrative expenses	5,352	3,805	10,339	7,373
Depreciation and amortization	1,208	933	2,660	1,594
Capital expenditures	191	857	269	1,324
Total assets	$ 75,830		$ 75,830		112,500
Percentage change in cost of revenue	24.00%		29.00%
Percentage change in direct operating expenses	22.00%		33.00%
Percentage change in selling, general and administrative expenses	41.00%		40.00%
Percentage change in depreciation and amortization	29.00%		67.00%
Digital \| Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 2,657	(227)	$ 4,824	(950)
Digital \| Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 41,068	30,234	$ 79,290	55,357
Percentage change in net revenue	36.00%		43.00%
Television
Segment Reporting Information [Line Items]
Direct operating expenses	$ 16,969	15,024	$ 33,897	29,783
Selling, general and administrative expenses	5,666	4,844	11,706	10,184
Depreciation and amortization	2,847	2,551	5,773	5,209
Capital expenditures	1,140	2,555	2,608	6,875
Total assets	$ 397,178		$ 397,178		342,818
Percentage change in direct operating expenses	13.00%		14.00%
Percentage change in selling, general and administrative expenses	17.00%		15.00%
Percentage change in depreciation and amortization	12.00%		11.00%
Percentage change in segment operating profit (loss)	(59.00%)		(62.00%)
Television \| Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 3,095	7,524	$ 5,750	15,079
Television \| Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 28,577	29,943	$ 57,126	60,255
Percentage change in net revenue	(5.00%)		(5.00%)
Audio
Segment Reporting Information [Line Items]
Direct operating expenses	$ 7,360	7,758	$ 15,275	14,851
Selling, general and administrative expenses	3,345	3,961	6,652	7,860
Depreciation and amortization	373	229	734	411
Capital expenditures	392	2,371	916	5,490
Total assets	$ 96,598		$ 96,598		$ 97,504
Percentage change in direct operating expenses	(5.00%)		3.00%
Percentage change in selling, general and administrative expenses	(16.00%)		(15.00%)
Percentage change in depreciation and amortization	63.00%		79.00%
Percentage change in segment operating profit (loss)	21.00%		(33.00%)
Audio \| Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 1,931	1,594	$ 1,753	2,632
Audio \| Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 13,009	$ 13,542	$ 24,414	$ 25,754
Percentage change in net revenue	(4.00%)		(5.00%)

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