Note 8 - Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Income before income taxes	$ 245	$ 138	$ 237	$ 79	$ 329	$ 199	$ (132)	$ 250	$ 699	$ 646
Tax rate									21.00%	21.00%
Income tax expense at federal statutory rate									$ 147	$ 136
State taxes, net of federal benefit									29	57
Noncontrolling interests									(19)	(10)
Change in rate									12	(18)
Change in uncertain tax positions									88	41
Other									(80)	95
Income tax expense	$ 17	$ 48	$ 76	$ 36	$ 169	$ 69	$ (2)	$ 65	$ 177	$ 301
Effective tax rate									25.30%	46.50%