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Note 11 - 2020 Cash Incentive Bonus Plan (Details Textual) - Cash Incentive Bonus Plan [Member] $ in Thousands		3 Months Ended	12 Months Ended
	Mar. 16, 2023 USD ($)	Mar. 16, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2021 USD ($)	Oct. 31, 2020 USD ($)
Cash Bonus Incentive, Incremental Amounts	14	14		11
Performance Plan, Minimum Number of Days Valuation Milestone Must be Achieved and Maintained (Day)	20 days	20 days
Percentage Valuation Milestone Cash Bonus Award Subject to Approval and Adjustment	67.00%	67.00%
Cash Incentive Bonus Award					$ 6,500
Share-Based Payment Arrangement, Expense, after Tax				$ 0
Payments for Cash Incentive Bonus			$ 0
Minimum [Member]
Performance Plan, Valuation Milestone Amount	$ 200,000	$ 200,000		$ 74,900
Cash Incentive Bonus Award, Exceeds Maximum	111,400	111,400
Maximum [Member]
Performance Plan, Valuation Milestone Amount	5,000,000	5,000,000
Cash Incentive Bonus Award, Exceeds Maximum	$ 289,700	$ 289,700