Description of the Business and Summary of Significant Accounting Policies - Schedule of Concentration Risk (Details) - Customer Concentration Risk	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Apple | Revenue Concentration
Concentration Risk [Line Items]
Concentration risk	45.50%	44.00%	45.70%	43.40%
Apple | Accounts Receivable Concentration as of
Concentration Risk [Line Items]
Concentration risk	63.80%	42.70%
Google | Revenue Concentration
Concentration Risk [Line Items]
Concentration risk	38.40%	35.40%	37.50%	35.60%
Google | Accounts Receivable Concentration as of
Concentration Risk [Line Items]
Concentration risk	25.50%	33.10%
Facebook | Revenue Concentration
Concentration Risk [Line Items]
Concentration risk	12.80%	16.90%	13.50%	17.50%
Facebook | Accounts Receivable Concentration as of
Concentration Risk [Line Items]
Concentration risk	8.40%	20.90%