Summary of Significant Accounting Policies (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Net revenue	$ 14,047,907	$ 19,004,851	$ 29,512,476	$ 39,508,836
Percentage of total revenue	100.00%	100.00%	100.00%	100.00%
Mobile
Disaggregation of Revenue [Line Items]
Net revenue	$ 8,823,577	$ 12,946,533	$ 19,370,199	$ 27,268,202
Desktop
Disaggregation of Revenue [Line Items]
Net revenue	4,935,654	5,693,452	9,530,276	11,657,328
Other
Disaggregation of Revenue [Line Items]
Net revenue	288,676	364,866	612,001	583,306
Partners
Disaggregation of Revenue [Line Items]
Net revenue	$ 10,478,313	$ 13,542,270	$ 21,976,771	$ 27,448,202
Percentage of total revenue	74.60%	71.30%	74.50%	69.50%
O&O
Disaggregation of Revenue [Line Items]
Net revenue	$ 3,569,594	$ 5,462,581	$ 7,535,705	$ 12,060,634
Percentage of total revenue	25.40%	28.70%	25.50%	30.50%