Note 12 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Tax Expense (Benefit)	$ 3,611,000	$ 6,398,000	$ 12,752,000	$ 19,297,000
Effective Income Tax Rate Reconciliation, Percent	29.90%	27.80%	29.60%	29.20%
Employee Service Share Based Compensation Tax Charge (Benefit) from Exercise Of Stock Options	$ 0	$ 276,000	$ 5,000	$ 578,000