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Intangible Assets, Net (Details) - USD ($)
1 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Intangible Assets, Net        
Intangible assets subject to amortization   $ 189,291,885 $ 189,882,242  
Less: Accumulated amortization   176,833,710 166,584,484  
Total intangible assets, net   $ 12,458,175 23,297,758  
Weighted Average Remaining Amortization Period   1 year 3 months 3 days    
Amortization expenses   $ 10,839,284 10,994,923 $ 11,636,952
Expected amortization expenses        
2023   10,633,512    
2024   1,813,828    
2025   10,836    
2026   0    
SINA | Advertising agency agreement and license agreements        
Intangible Assets, Net        
Percentage of revenue fee on sales 15.00%      
Additional consideration upon extension term of agreement $ 0      
Advertising agency agreement | SINA        
Intangible Assets, Net        
Intangible assets subject to amortization   106,790,000 106,790,000  
Less: Accumulated amortization   $ 99,725,921 93,670,998  
Weighted Average Remaining Amortization Period   1 year 3 months    
Extension term of agreement 5 years      
License agreements | SINA        
Intangible Assets, Net        
Intangible assets subject to amortization   $ 80,660,000 80,660,000  
Less: Accumulated amortization   $ 75,405,899 70,902,383  
Weighted Average Remaining Amortization Period   1 year 3 months    
Computer software licenses        
Intangible Assets, Net        
Intangible assets subject to amortization   $ 1,841,885 2,432,242  
Less: Accumulated amortization   $ 1,701,890 $ 2,011,103  
Weighted Average Remaining Amortization Period   1 year 11 months 15 days