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Commitments and Contingencies (Details Narrative) (Brooklyn ImmunoTherapeutics, LLC) (10-K) |  |  |  |  |  | 2 Months Ended | 3 Months Ended | 9 Months Ended | 10 Months Ended | 12 Months Ended |  |
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Dec. 13, 2019 USD ($) | Jul. 02, 2019 USD ($) | Apr. 18, 2019 USD ($) ft² | Nov. 07, 2018 | Jul. 31, 2018 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Nov. 05, 2018 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Aug. 13, 2020 USD ($) | Jan. 02, 2019 USD ($)
Concentration risk percentage |  |  |  |  |  |  | 100.00% | 100.00% | 100.00% | 100.00% |  | 100.00% | 100.00% |  |
Debt instrument principal amount |  |  |  |  |  |  | $ 3,350,100 |  | $ 3,350,100 |  |  |  |  |  |
Lease description |  |  |  |  |  |  |  |  | The Company has operating leases for its warehouse facility and for equipment under agreements that expire at various dates through 2023. |  |  | The Company has entered into operating leases for office and production facilities and equipment under agreements that expire at various dates through 2026. |  |  |
Operating lease liabilities |  |  |  |  |  | $ 3,458,000 | 5,000 |  | $ 5,000 |  |  | $ 3,300,000 | $ 3,458,000 |  | $ 3,458,000
Brooklyn Immunotherapeutics, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease expiration term |  | Dec. 31, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
Rent expense |  | $ 485,061 |  |  |  |  |  |  |  |  |  |  |  |  |
Lease description |  | In connection with the Business Combination, BITX also assumed IRX's lease for laboratory space in Brooklyn, New York (the "Laboratory Lease"), with annual rent expense for the first year of $314,577 beginning on the date of the Business Combination. Effective on July 1, 2019, the Laboratory Lease was amended to increase the space rented under the Laboratory Lease. Annual rent expense (including the Company's pro rata share of operating expenses) for 12 months beginning July 1, 2019 increased to $485,061 pursuant to the amended Laboratory Lease, and the rent increases 3% on January 1 of each lease year. The Laboratory Lease expires on December 31, 2025. |  |  |  |  |  |  |  |  |  |  |  |  |
Sublease payments |  |  |  |  |  |  |  |  | 58,957 | $ 6,535 |  |  |  |  |
Operating lease liabilities |  |  |  |  |  |  | $ 100,700 |  | $ 100,700 |  |  | 103,056 |  |  |
Brooklyn Immunotherapeutics, LLC [Member] | Successor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rent expense |  |  |  |  |  | $ 77,170 |  |  |  |  |  | 544,214 |  |  |
Sublease payments |  |  |  |  |  |  |  |  |  |  |  | 32,676 |  |  |
Operating lease liabilities |  |  |  |  |  |  |  |  |  |  |  | $ 103,350 |  |  |
Brooklyn Immunotherapeutics, LLC [Member] | Predecessor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rent expense |  |  |  |  |  |  |  |  |  |  | $ 480,577 |  |  |  |
Brooklyn Immunotherapeutics, LLC [Member] | Office Lease [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease expiration term |  |  |  |  |  |  |  |  |  |  |  | Nov. 30, 2026 |  |  |
Rent expense |  |  |  |  |  |  |  |  |  |  |  | $ 93,275 |  |  |
Brooklyn Immunotherapeutics, LLC [Member] | Laboratory Lease [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rent expense |  |  |  |  |  |  |  |  |  |  |  | $ 314,577 |  |  |
Brooklyn Immunotherapeutics, LLC [Member] | USF License Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalty payable percentage |  |  |  |  |  |  |  |  |  |  |  | 7.00% |  |  |
Brooklyn Immunotherapeutics, LLC [Member] | Predecessor Royalty Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage |  |  |  |  |  |  |  |  |  |  | 1.00% |  |  |  |
Brooklyn Immunotherapeutics, LLC [Member] | Collaborator Royalty Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage |  |  |  |  |  |  |  |  |  |  |  | 6.00% |  |  |
Brooklyn Immunotherapeutics, LLC [Member] | Investor Royalty Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage |  |  |  | 4.00% |  |  |  |  |  |  |  |  |  |  |
Brooklyn Immunotherapeutics, LLC [Member] | CEO Separation Agreement [Member] | Chief Executive Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Severance pay | $ 225,000 |  |  |  | $ 275,000 |  |  |  |  |  |  |  |  |  |
Debt instrument principal amount |  |  |  |  | $ 31,731 |  |  |  |  |  |  |  |  |  |
Unused vacation time | 37,518 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Health and dental insurance plan | $ 14,032 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Brooklyn Immunotherapeutics, LLC [Member] | IRX Therapeutics, Inc [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business combination percentage |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |
Legal settlements |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 150,000 |
Brooklyn Immunotherapeutics, LLC [Member] | Nezu Asia Capital Management, LLC [Member] | Sublease Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease expiration term |  |  | Oct. 31, 2026 |  |  |  |  |  |  |  |  |  |  |  |
Area of land | ft² |  |  | 999 |  |  |  |  |  |  |  |  |  |  |  |
Lease term |  |  | 8 years |  |  |  |  |  |  |  |  |  |  |  |
Sublease payments |  |  | $ 78,422 |  |  |  |  |  |  |  |  |  |  |  |
Increase in rent expense |  |  | 2.25% |  |  |  |  |  |  |  |  |  |  |  |

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