Note 7 - Long Term Debt - (Details Textual) - USD ($) $ in Millions	Mar. 31, 2023	Mar. 01, 2022
Debt Issued in Connection with the TCBI Acquisition [Member]
Debt Instrument, Face Amount		$ 26.4
Debt Issued in Connection with the TCBI Acquisition, Tranche One [Member]
Debt Instrument, Face Amount		$ 10.0
Debt Instrument, Interest Rate, Stated Percentage		6.25%
Debt Issued in Connection with the TCBI Acquisition, Tranche One [Member] | Base Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		3.50%
Debt Issued in Connection with the TCBI Acquisition, Tranche Two [Member]
Debt Instrument, Face Amount		$ 7.5
Debt Instrument, Interest Rate, Stated Percentage		6.38%
Debt Issued in Connection with the TCBI Acquisition, Tranche Two [Member] | Base Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		3.50%
Debt Issued in Connection with the TCBI Acquisition, Tranche Three [Member]
Debt Instrument, Face Amount		$ 8.9
Liabilities, Fair Value Adjustment	$ 2.8
Debt Issued in Connection with the TCBI Acquisition, Tranche Three [Member] | Base Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		5.95%