Segment Data - Separate Financial Data for Each of Company's Operating Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Net revenue	$ 956,209	$ 760,192	$ 344,026
Cost of revenue	623,916	466,517	106,928
Direct operating expenses	122,611	116,449	104,909
Selling, general and administrative expenses	75,165	56,585	48,404
Depreciation and amortization	25,697	22,420	17,282
Operating income (loss)	40,252	60,471	6,608
Corporate expenses	49,404	32,993	27,807
Change in fair value of contingent consideration	14,210	8,224
Impairment charge	1,600	3,023	40,035
Foreign currency (gain) loss	2,972	508	(1,052)
Other operating (gain) loss	382	(6,998)	(6,895)
Capital expenditures	12,634	5,611	9,484
Total assets	$ 880,841	$ 851,342	747,345
Percentage change in net revenue	26.00%	121.00%
Percentage change in direct operating expenses	5.00%	11.00%
Percentage change in selling, general and administrative expenses	33.00%	17.00%
Percentage change in depreciation and amortization	15.00%	30.00%
Percentage change in segment operating profit (loss)	11.00%	48.00%
Percentage change in corporate expenses	50.00%	19.00%
Percentage change in fair value of contingent consideration	73.00%
Percentage change in impairment charge	(47.00%)	(92.00%)
Percentage change in foreign currency (gain) loss	485.00%
Percentage change in other operating (gain) loss		1.00%
Percentage change in operating income (loss)	(33.00%)	815.00%
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 108,820	$ 98,221	66,503
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Corporate expenses	49,404	32,993	27,807
Television
Segment Reporting Information [Line Items]
Direct operating expenses	61,301	63,016	61,145
Selling, general and administrative expenses	20,657	18,381	19,748
Depreciation and amortization	11,126	12,477	12,918
Capital expenditures	5,887	2,833	7,184
Total assets	$ 363,904	$ 433,303	425,899
Percentage change in direct operating expenses	(3.00%)	3.00%
Percentage change in selling, general and administrative expenses	12.00%	(7.00%)
Percentage change in depreciation and amortization	(11.00%)	(3.00%)
Percentage change in segment operating profit (loss)	(2.00%)	(13.00%)
Television | Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 51,646	$ 52,965	60,645
Digital
Segment Reporting Information [Line Items]
Cost of revenue	623,916	466,517	106,928
Direct operating expenses	32,518	25,481	15,227
Selling, general and administrative expenses	41,612	26,123	15,404
Depreciation and amortization	12,148	8,377	2,561
Capital expenditures	6,186	2,073	1,659
Total assets	$ 408,027	$ 309,347	196,020
Percentage change in cost of revenue	34.00%	336.00%
Percentage change in direct operating expenses	28.00%	67.00%
Percentage change in selling, general and administrative expenses	59.00%	70.00%
Percentage change in depreciation and amortization	45.00%	227.00%
Percentage change in segment operating profit (loss)	28.00%	804.00%
Digital | Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 36,909	$ 28,840	3,189
Audio
Segment Reporting Information [Line Items]
Direct operating expenses	28,792	27,952	28,537
Selling, general and administrative expenses	12,896	12,081	13,252
Depreciation and amortization	2,423	1,566	1,803
Capital expenditures	561	705	641
Total assets	$ 108,910	$ 108,692	125,426
Percentage change in direct operating expenses	3.00%	(2.00%)
Percentage change in selling, general and administrative expenses	7.00%	(9.00%)
Percentage change in depreciation and amortization	55.00%	(13.00%)
Percentage change in segment operating profit (loss)	23.00%	515.00%
Audio | Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 20,265	$ 16,416	2,669
Advertising and Retransmission Consent | Television
Segment Reporting Information [Line Items]
Net revenue	$ 144,730	$ 146,839	154,456
Percentage change in net revenue	(1.00%)	(5.00%)
Advertising and Retransmission Consent | Digital
Segment Reporting Information [Line Items]
Net revenue	$ 747,103	$ 555,338	143,309
Percentage change in net revenue	35.00%	288.00%
Advertising and Retransmission Consent | Audio
Segment Reporting Information [Line Items]
Net revenue	$ 64,376	$ 58,015	$ 46,261
Percentage change in net revenue	11.00%	25.00%