Note 11 - Derivative Instruments and Hedging Activities - Notional or Contractual Amounts and Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Notional or contractual amount	$ 3,983	$ 12,278
Derivative assets	199	0
Derivative liabilities	0	837
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Notional or contractual amount	3,983	4,388
Derivative assets	199	0
Derivative liabilities	0	229
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]
Notional or contractual amount	0	7,890
Derivative assets	0	0
Derivative liabilities	$ 0	$ 608