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Net Revenue - Composition of Revenue (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Net revenue	$ 63,823,288	$ 62,902,935	$ 184,354,006	$ 170,689,680
Audio [Member]
Disaggregation of Revenue [Line Items]
Net revenue	52,995,670	54,043,650	153,778,711	146,988,486
Digital [Member]
Disaggregation of Revenue [Line Items]
Net revenue	10,241,671	8,318,112	28,769,331	22,065,183
Other [Member]
Disaggregation of Revenue [Line Items]
Net revenue	$ 585,947	$ 541,173	$ 1,805,964	$ 1,636,011

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