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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Composition of Revenue | Revenue is comprised of the following:
|  | Year ended December 31, |
|  | 2019 |  |  | 2020 |
Commercial advertising |  | $ | 224,314,435 |  |  | $ | 171,830,152 |
Digital advertising |  |  | 19,815,489 |  |  |  | 21,605,742 |
Other revenue |  |  | 17,424,190 |  |  |  | 12,707,967 |
|  | $ | 261,554,114 |  |  | $ | 206,143,861 |
Deferred Revenue |
|  | December 31, 2019 |  |  | December 31, 2020 |
Deferred revenue |  | $ | 3,639,077 |  |  | $ | 3,732,890 |
|  | Year ended December 31, |
|  | 2019 |  |  | 2020 |
Losses on receivables |  | $ | 557,582 |  |  | $ | 2,318,987 |
Trade Sale Revenue |
|  | December 31, |  |  | December 31, |
|  | 2019 |  |  | 2020 |
Trade sales receivable |  | $ | 1,691,295 |  |  | $ | 956,999 |
Trade sales payable |  |  | 2,180,783 |  |  |  | 892,543 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 + Details
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