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Note 11 - Fair Value Measurements - Changes in Derivative Liabilities (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025
Beginning balance | $ 1,960,796 | $ 1,529,850
Additions (Deductions) | 0 | (1,281,105)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings | (722,015) | (1,190,803)
Payments for decrease in contractual stock consideration | (1,102,667) | 120,000
Ending balance | 136,114 | (822,058)
Georges Trust Derivative Instrument [Member] |  |
Beginning balance | 1,201,114 |
Additions (Deductions) | 0 |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings | (1,194,000) |
Payments for decrease in contractual stock consideration | 129,000 |
Ending balance | 136,114 |
Kips Bay 2025 Conversion Option Derivative [Member] |  |
Beginning balance |  | 0
Additions (Deductions) |  | (1,421,645)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings |  | 501,645
Payments for decrease in contractual stock consideration |  | 0
Ending balance |  | (920,000)
Alvin Fund Derivative Instrument [Member] |  |
Beginning balance | 759,682 |
Additions (Deductions) | 0 |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings | 471,985 |
Payments for decrease in contractual stock consideration | (1,231,667) |
Ending balance | $ 0 |
LINICO Acquisition Derivative Instrument [Member] |  |
Beginning balance |  | 0
Additions (Deductions) |  | (340,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings |  | 31,000
Payments for decrease in contractual stock consideration |  | 0
Ending balance |  | (309,000)
AST Derivative Instrument [Member] |  |
Beginning balance |  | 0
Additions (Deductions) |  | 480,540
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings |  | (88,540)
Payments for decrease in contractual stock consideration |  | 0
Ending balance |  | 392,000
Haywood Derivative Instrument [Member] |  |
Beginning balance |  | 1,529,850
Additions (Deductions) |  | 0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings |  | (1,634,908)
Payments for decrease in contractual stock consideration |  | 120,000
Ending balance |  | $ 14,942

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