CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net revenue	$ 14,047,907	$ 19,004,851	$ 29,512,476	$ 39,508,836
Cost of revenue	5,674,360	6,991,304	12,354,988	15,769,898
Gross profit	8,373,547	12,013,547	17,157,488	23,738,938
Operating expenses
Marketing costs (traffic acquisition costs or TAC)	6,528,336	8,446,163	13,072,345	16,740,457
Compensation	1,735,489	2,323,654	3,544,045	4,943,169
Selling, general and administrative	2,213,507	1,982,851	4,590,568	4,109,213
Total operating expenses	10,477,332	12,752,668	21,206,958	25,792,839
Operating loss	(2,103,785)	(739,121)	(4,049,470)	(2,053,901)
Interest income (expense), net	148,792	(94,556)	(367,916)	(195,445)
Loss before taxes	(1,954,993)	(833,677)	(4,417,386)	(2,249,346)
Income tax benefit	0	980	0	8,625
Net loss	$ (1,954,993)	$ (832,697)	$ (4,417,386)	$ (2,240,721)
Per common share data: Basic and diluted
Net loss (in usd per share)	$ (0.06)	$ (0.03)	$ (0.14)	$ (0.08)
Weighted average shares
Basic (in shares)	32,570,866	30,614,207	32,484,878	29,634,023
Diluted (in shares)	32,570,866	30,614,207	32,484,878	29,634,023