Note 12 - Income Taxes (Details Textual)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Effective Income Tax Rate Reconciliation, Percent, Total	22.90%	21.30%
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Open Tax Year	2018 2019 2020 2021 2022
State and Local Jurisdiction [Member] | California Franchise Tax Board [Member]
Open Tax Year	2017 2018 2019 2020 2021 2022