Note 13 - Fair Value Measurements and Fair Value of Financial Instruments (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Other Real Estate, Foreclosed Assets, and Repossessed Assets, Total	$ 4,918	$ 4,918
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	0.0020
Minimum [Member] | Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input	0.1676
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	0.0134
Maximum [Member] | Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input	0.2130
Maximum [Member] | Warrants Outstanding [Member]
Expected Life Of Warrants (Year)	6 years
Net of Estimated Disposal Costs [Member]
Other Real Estate, Foreclosed Assets, and Repossessed Assets, Total	$ 4,900