Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Disaggregation of Revenue (Details)

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Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Disaggregation of Revenue [Line Items]    
Net revenue $ 61,525,214 $ 73,330,642
Percentage of total revenue 100.00% 100.00%
Impairment of finite-lived intangible assets $ 0 $ 0
Mobile    
Disaggregation of Revenue [Line Items]    
Net revenue 37,120,187 50,785,680
Desktop    
Disaggregation of Revenue [Line Items]    
Net revenue 23,390,006 21,398,065
Other    
Disaggregation of Revenue [Line Items]    
Net revenue 1,015,021 1,146,897
Partners    
Disaggregation of Revenue [Line Items]    
Net revenue $ 41,763,064 $ 52,087,368
Percentage of total revenue 67.90% 71.00%
Owned Sites    
Disaggregation of Revenue [Line Items]    
Net revenue $ 19,762,150 $ 21,243,274
Percentage of total revenue 32.10% 29.00%