Note 10 - Fair Value of Financial Instruments - (Details Textual) $ in Thousands	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Fair Value, Recurring [Member]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	$ 0	$ 0
Fair Value, Nonrecurring [Member]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	$ 0	$ 0
Fair Value, Nonrecurring [Member] | Measurement Input, Cost to Sell [Member] | Fair Value, Inputs, Level 3 [Member]
Other Real Estate Owned, Measurement Input	10