Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Net revenue	$ 44,640,007	$ 61,525,214
Percentage of total revenue	100.00%	100.00%
ValidClick Platform
Disaggregation of Revenue [Line Items]
Net revenue	$ 34,233,638	$ 53,006,638
Percentage of total revenue	76.70%	86.20%
IntelKey Platform
Disaggregation of Revenue [Line Items]
Net revenue	$ 10,406,369	$ 8,518,576
Percentage of total revenue	23.30%	13.80%