Note 9 - Leases (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating Lease, Weighted Average Remaining Lease Term (Month)	33 months	39 months
Operating Lease, Weighted Average Discount Rate, Percent	5.10%	4.40%
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 89,000	$ 318,000
Operating Lease, Payments	332,000	285,000
Operating Lease, Cost	6,500,000	5,700,000
Short-Term Lease, Cost	$ 6,200,000	$ 5,400,000