Compensation Plans - Summary of Stock-based Compensation (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Cost of revenue	$ 24,708,941	$ 7,612,585	$ 76,321,953	$ 18,752,322
Selling and marketing	9,928,901	2,059,820	27,698,182	4,660,213
General and administrative	7,172,175	7,262,496	24,852,891	17,358,764
Total stock based compensation			11,185,953	6,951,074
Stock-based Compensation [Member]
Cost of revenue	1,270,498	285,253	3,563,691	525,582
Selling and marketing	1,144,150	221,843	3,280,134	501,463
General and administrative	1,427,730	2,484,053	4,184,562	5,924,029
Total costs charged to operations	3,842,378	2,991,149	11,028,387	6,951,074
Capitalized platform development	389,500	413,724	1,259,163	985,994
Total stock based compensation	4,231,878	3,404,873	12,287,550	7,937,068
Stock-based Compensation [Member] | Channel Partner Warrants [Member]
Cost of revenue	992	15,959	36,654	34,868
Selling and marketing
General and administrative
Total costs charged to operations	992	15,959	36,654	34,868
Capitalized platform development
Total stock based compensation	992	15,959	36,654	34,868
Stock-based Compensation [Member] | ABG Warrants [Member]
Cost of revenue
Selling and marketing
General and administrative	364,248	364,248	1,084,826	431,555
Total costs charged to operations	364,248	364,248	1,084,826	431,555
Capitalized platform development
Total stock based compensation	364,248	364,248	1,084,826	431,555
Restricted Stock Awards [Member] | Stock-based Compensation [Member]
Cost of revenue	35,610	30,564	108,936	92,465
Selling and marketing	323,164		920,566	34,393
General and administrative	80,306	553,866	238,558	2,128,725
Total costs charged to operations	439,080	584,430	1,268,060	2,255,583
Capitalized platform development	88,619	130,445	234,611	462,754
Total stock based compensation	527,699	714,875	1,502,671	2,718,337
Common Stock Awards [Member] | Stock-based Compensation [Member]
Cost of revenue	53,149	6,644	150,915	33,828
Selling and marketing	42,695	26,237	102,206	74,177
General and administrative	127,786	426,594	437,614	1,226,111
Total costs charged to operations	223,630	459,475	690,735	1,334,116
Capitalized platform development	32,680	55,394	154,445	128,179
Total stock based compensation	256,310	514,869	845,180	1,462,295
Common Equity Awards [Member] | Stock-based Compensation [Member]
Cost of revenue	1,178,276	231,936	3,261,542	362,993
Selling and marketing	734,391	139,921	2,114,595	259,957
General and administrative	855,390	1,094,017	2,430,553	2,026,302
Total costs charged to operations	2,768,057	1,465,874	7,806,690	2,649,252
Capitalized platform development	267,013	225,804	864,656	390,834
Total stock based compensation	3,035,070	1,691,678	8,671,346	3,040,086
Outside Options [Member] | Stock-based Compensation [Member]
Cost of revenue	2,471	150	5,644	1,428
Selling and marketing	43,900	55,685	142,767	132,936
General and administrative		45,328	150,577	111,336
Total costs charged to operations	46,371	101,163	298,988	245,700
Capitalized platform development	1,188	2,081	5,451	4,227
Total stock based compensation	$ 47,559	$ 103,244	$ 304,439	$ 249,927