Note 6 - Other Assets and Other Liabilities - Amounts Recognized in Net Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Limited partnership operating losses	$ 1,440	$ 1,431	$ 4,314	$ 4,293
Tax credits recognized in provision for income taxes	$ 765	$ 804	$ 2,820	$ 2,412