Note 13 - Fair Value Measurements and Fair Value of Financial Instruments (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)	Mar. 31, 2023 USD ($)
Other Real Estate, Foreclosed Assets, and Repossessed Assets	$ 4,067	$ 4,067
Minimum [Member]
Estimated Sales Cost Applied To Collateral		3.00%
Minimum [Member] | Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input	0.0425
Minimum [Member] | Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input	0.2014
Minimum [Member] | Warrants Outstanding [Member]
Expected Life Of Warrants (Year)	1 year
Maximum [Member]
Estimated Sales Cost Applied To Collateral		6.00%
Maximum [Member] | Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input	0.0511
Maximum [Member] | Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input	0.2769
Maximum [Member] | Warrants Outstanding [Member]
Expected Life Of Warrants (Year)	5 years
Net of Estimated Disposal Costs [Member]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	$ 4,100	$ 4,100