Note 7 - Notes Payable - Sale of Future Receipts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Non-recourse payable agreements, amortization of discounts	$ 11,037	$ 3,392
Total long-term debt	245,236	$ 229,379
Non-Recourse Payable Agreement [Member]
Debt	11,440
Non-recourse payable agreements, repayments	(1,040)
Non-recourse payable agreements, fees	(160)
Non-recourse agreement, discounts	(3,440)
Non-recourse payable agreements, amortization of discounts	555
Total long-term debt	$ 7,355