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Note 5 - Property, Plant and Equipment | 3 Months Ended
--- | ---
Mar. 31, 2024
Notes to Financial Statements |
Property, Plant and Equipment Disclosure [Text Block] | 5. Property, Plant and Equipment Property, plant and equipment consisted of the following:
|  | As of |
|  | March 31, 2024 |  |  | December 31, 2023 |
Leasehold improvements |  | $ | 2,420,028 |  |  | $ | 2,420,028 |
Computer equipment |  |  | 468,937 |  |  |  | 468,937 |
Furniture and fixtures |  |  | 347,045 |  |  |  | 347,045 |
Operating lease right-of-use assets |  |  | 3,678,647 |  |  |  | 3,678,647 |
|  |  | 6,914,657 |  |  |  | 6,914,657 |
Less – accumulated depreciation and amortization |  |  | (5,721,420 | ) |  |  | (5,582,949 | )
Property, plant and equipment, net |  | $ | 1,193,237 |  |  | $ | 1,331,708 |
Depreciation and amortization expense on property, plant, and equipment was $0.1 million for each of the three months ended March 31, 2024 and 2023.

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