Note 13 - Fair Value Measurements (Details Textual) $ in Thousands	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Other Real Estate, Foreclosed Assets, and Repossessed Assets, Total	$ 9,048	$ 10,244
Minimum [Member]
Warrants and Rights Outstanding, Measurement Input		3.00%
Maximum [Member]
Warrants and Rights Outstanding, Measurement Input		6.00%
Measurement Input, Expected Term [Member] | Minimum [Member]
Warrants and Rights Outstanding, Measurement Input	1
Measurement Input, Expected Term [Member] | Maximum [Member]
Warrants and Rights Outstanding, Measurement Input	5
Measurement Input, Risk Free Interest Rate [Member] | Minimum [Member]
Warrants and Rights Outstanding, Measurement Input	0.46%
Measurement Input, Risk Free Interest Rate [Member] | Maximum [Member]
Warrants and Rights Outstanding, Measurement Input	0.93%
Measurement Input, Price Volatility [Member] | Minimum [Member]
Warrants and Rights Outstanding, Measurement Input	13.78%
Measurement Input, Price Volatility [Member] | Maximum [Member]
Warrants and Rights Outstanding, Measurement Input	17.38%