Organization and Business - Customer Concentration (Details) - Customer Concentration Risk - Net Revenue	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Yahoo and Google
Concentration Risk [Line Items]
Percentage of concentration risk	51.30%	74.00%	62.50%	80.40%
Yahoo!
Concentration Risk [Line Items]
Percentage of concentration risk	22.20%	59.90%	39.40%	68.00%
Google
Concentration Risk [Line Items]
Percentage of concentration risk	29.10%	14.10%	23.10%	12.40%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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