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Net Revenue - Composition of Revenue (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Net revenue	$ 55,720,268	$ 48,212,040
Audio [Member]
Disaggregation of Revenue [Line Items]
Net revenue	47,365,145	41,729,602
Digital [Member]
Disaggregation of Revenue [Line Items]
Net revenue	7,808,250	5,763,728
Other [Member]
Disaggregation of Revenue [Line Items]
Net revenue	$ 546,873	$ 718,710

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