Note 13 - Income Taxes - Narratives (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Loss Carryforwards [Line Items]
Valuation allowances	$ 0	$ 0
Unrecognized tax positions	0	0
Income tax paid, after refund	1,200,000		$ 15,500,000
Income tax paid, before refund	1,228,000	771,000	$ 15,500,000
Income tax refund		$ 11,800,000
Domestic Tax Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 35,000,000