Note 13 - Income Taxes - Narratives (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Loss Carryforwards [Line Items]
Cash paid for income taxes	$ 771,000	$ 15,500,000	$ 9,000
Unrecognized tax positions	0	$ 0
Income tax refund	11,800,000
Prepaid expenses and other current assets
Operating Loss Carryforwards [Line Items]
Income tax receivable	14,600,000
Domestic Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 35,000,000