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Schedule of Contract with Customer, Asset and Liability (Details) - USD ($) | Sep. 30, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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Disaggregation of Revenue [Line Items] |  |  |
Unearned revenues (short-term contract liabilities) | $ 71,305,655 | $ 61,625,676 | $ 32,163,087
Unearned revenues (long-term contract liabilities) | 19,207,736 | 23,498,597 | 31,179,211
Subscription and Circulation [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Unearned revenues (short-term contract liabilities) | 15,708,139 | 14,870,712 |
Magazine Circulation [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Unearned revenues (short-term contract liabilities) | 49,244,783 | 46,586,345 | 23,528,148
Unearned revenues (long-term contract liabilities) | 17,444,012 | 22,712,961 | 30,478,154
Advertising And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Unearned revenues (short-term contract liabilities) | 6,352,733 | 168,619 |
Digital Subscriptions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Unearned revenues (short-term contract liabilities) |  | 15,039,331 | 8,634,939
Unearned revenues (long-term contract liabilities) | 1,593,724 | 593,136 | 478,557
Service, Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Unearned revenues (long-term contract liabilities) | $ 170,000 | 192,500 |
Product and Service, Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Unearned revenues (long-term contract liabilities) |  | $ 192,500 | $ 222,500

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130532-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045 + Details
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130532-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045 + Details
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