Note 13 - Fair Value of Financial Instruments - Schedule of Carrying Amounts of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Assets, Fair Value Disclosure [Abstract]
Derivative assets	$ 2,830	$ 3,426
Liabilities, Fair Value Disclosure [Abstract]
Derivative liabilities	790	1,208
Fair Value, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Derivative assets	2,830	3,426
Liabilities, Fair Value Disclosure [Abstract]
Derivative liabilities	790	1,208
Fair value of loans	13,194	17,895
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Derivative assets	2,830	3,426
Liabilities, Fair Value Disclosure [Abstract]
Derivative liabilities	790	1,208
Fair value of loans	$ 13,194	$ 17,895