Summary of Significant Accounting Policies - Summary of Revenues Based Upon Sales Channel (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Amount	$ 54,668,198	$ 44,483,740
Percent of Total	100.00%	100.00%
Sales Channel Directly To Consumer Subscription Sales [Member]
Disaggregation of Revenue [Line Items]
Amount	$ 8,347,896	$ 5,480,524
Percent of Total	15.30%	12.30%
Sales Channel Directly To Consumer Transaction Sales [Member]
Disaggregation of Revenue [Line Items]
Amount	$ 17,462,301	$ 13,923,476
Percent of Total	31.90%	31.30%
Sales Channel Professional Business To Business Sales [Member]
Disaggregation of Revenue [Line Items]
Amount	$ 28,858,001	$ 25,079,740
Percent of Total	52.80%	56.40%