Segment Information - Separate Financial Data for Each of Company's Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net revenue	$ 274,417	$ 241,014	$ 786,804	$ 659,881
Cost of revenue	199,289	157,095	562,881	431,951
Direct operating expenses	31,855	30,086	94,782	87,505
Selling, general and administrative expenses	21,954	19,208	68,287	53,022
Depreciation and amortization	7,356	6,554	20,336	19,212
Operating income (loss)	5,131	15,904	12,343	33,511
Corporate expenses	13,292	9,525	35,836	26,769
Change in fair value of contingent consideration	(5,997)	734	(8,939)	6,810
Impairment charge	989		989
Foreign currency (gain) loss	548	1,966	289	2,112
Other operating (gain) loss		(58)		(1,011)
Interest expense	(4,454)	(3,055)	(12,788)	(7,225)
Interest income	1,558	788	3,455	1,916
Dividend income		6	32	20
Realized gain (loss) on marketable securities	(33)	(473)	(94)	(473)
Gain (loss) on debt extinguishment			(1,556)
Income (loss) before income taxes	2,202	13,170	1,392	27,749
Capital expenditures	3,991	4,221	18,837	7,629
Total assets	$ 876,135		$ 876,135		$ 880,841
Percentage change in net revenue	14.00%		19.00%
Percentage change in direct operating expenses	6.00%		8.00%
Percentage change in selling, general and administrative expenses	14.00%		29.00%
Percentage change in depreciation and amortization	12.00%		6.00%
Percentage change in segment operating profit (loss)	(50.00%)		(41.00%)
Percentage change in corporate expenses	40.00%		34.00%
Percentage change in foreign currency (gain) loss	72.00%		86.00%
Percentage change in other operating (gain) loss	(100.00%)		(100.00%)
Percentage change in operating income (loss)	(68.00%)		(63.00%)
Percentage change in interest expense	46.00%		77.00%
Percentage change in interest income	98.00%		80.00%
Percentage change in dividend income	(100.00%)		60.00%
Percentage change in realized gain (loss) on marketable securities	(93.00%)		(80.00%)
Percentage change in income (loss) before income taxes	(83.00%)		(95.00%)
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 13,963	28,071	$ 40,518	68,191
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Corporate expenses	13,292	9,525	35,836	26,769
Digital
Segment Reporting Information [Line Items]
Cost of revenue	199,289	157,095	562,881	431,951
Direct operating expenses	9,307	8,041	27,600	23,017
Selling, general and administrative expenses	13,866	11,039	42,155	28,560
Depreciation and amortization	4,068	3,230	11,428	8,551
Capital expenditures	1,304	977	3,785	2,838
Total assets	$ 397,144		$ 397,144		408,027
Percentage change in cost of revenue	27.00%		30.00%
Percentage change in direct operating expenses	16.00%		20.00%
Percentage change in selling, general and administrative expenses	26.00%		48.00%
Percentage change in depreciation and amortization	26.00%		34.00%
Percentage change in segment operating profit (loss)	(48.00%)		(45.00%)
Digital | Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 4,957	9,472	$ 13,801	24,887
Digital | Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 231,487	188,877	$ 657,865	516,966
Percentage change in net revenue	23.00%		27.00%
Television
Segment Reporting Information [Line Items]
Direct operating expenses	$ 14,967	14,941	$ 44,750	43,712
Selling, general and administrative expenses	4,925	5,062	15,109	15,257
Depreciation and amortization	2,722	2,723	7,931	8,424
Capital expenditures	1,108	3,121	7,983	4,257
Total assets	$ 367,681		$ 367,681		363,904
Percentage change in direct operating expenses	0.00%		2.00%
Percentage change in selling, general and administrative expenses	(3.00%)		(1.00%)
Percentage change in depreciation and amortization	0.00%		(6.00%)
Percentage change in segment operating profit (loss)	(46.00%)		(30.00%)
Television | Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 6,938	12,952	$ 22,017	31,525
Television | Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 29,552	35,678	$ 89,807	98,918
Percentage change in net revenue	(17.00%)		(9.00%)
Audio
Segment Reporting Information [Line Items]
Direct operating expenses	$ 7,581	7,104	$ 22,432	20,776
Selling, general and administrative expenses	3,163	3,107	11,023	9,205
Depreciation and amortization	566	601	977	2,237
Capital expenditures	1,579	123	7,069	534
Total assets	$ 111,310		$ 111,310		$ 108,910
Percentage change in direct operating expenses	7.00%		8.00%
Percentage change in selling, general and administrative expenses	2.00%		20.00%
Percentage change in depreciation and amortization	(6.00%)		(56.00%)
Percentage change in segment operating profit (loss)	(63.00%)		(60.00%)
Audio | Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 2,068	5,647	$ 4,700	11,779
Audio | Advertising and Retransmission Consent
Segment Reporting Information [Line Items]
Net revenue	$ 13,378	$ 16,459	$ 39,132	$ 43,997
Percentage change in net revenue	(19.00%)		(11.00%)