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Income Taxes (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Income Taxes (Details) [Line Items] |  |  |  |
Income tax expense from continuing operations | $ 1,100 | $ 2,500 | $ 159,265 |
Effective tax rate from statutory rate | 0.11% | 0.57% | 21.00% | 21.00%
Effective tax rate differs from the statutory rate | 21.00% | 21.00% |  |
Income tax expense from discontinued operations |  |  | $ 159,265 |
Valuation allowance increased |  |  | 446,075 |
Net operating loss carryforwards |  |  | $ 1,200,000 |
Annual limitation description |  |  | which $14.4 million may be subject to a significant annual limitation under Section 382 of the Internal Revenue Code. Of the $18.3 million, approximately, $17.1 million will expire in 2030 to 2037, if not utilized. The remaining $1.2 million may be carried forward indefinitely. |
State and local taxes [Member] |  |  |  |
Income Taxes (Details) [Line Items] |  |  |  |
Income tax provision |  |  | $ 387 | $ 17,672
Federal Tax [Member] |  |  |  |
Income Taxes (Details) [Line Items] |  |  |  |
Net operating loss carryforwards |  |  | $ 18,300,000 |

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