Note 17 - Business Combination - Fair Value of Consideration Transferred and Assets and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jul. 23, 2021	Dec. 31, 2021	Dec. 31, 2020
Total identifiable assets acquired		$ 1,340	$ 0
Total liabilities assumed		$ 65,947	$ 0
Acquisition Of Sterling Branch [Member]
Cash consideration received	$ 63,545
Premises and equipment	459
Accrued interest receivable and other assets	755
Total identifiable assets acquired	1,340
Deposits	64,867
Accrued expenses and other liabilities	1,080
Total liabilities assumed	65,947
Total identifiable net liabilities assumed	(64,607)
Goodwill recognized	1,062
Acquisition Of Sterling Branch [Member] | Core Deposits [Member]
Core deposit intangible ("CDI")	126
Acquisition Of Sterling Branch [Member] | Reported Value by Acquiree [Member]
Cash consideration received
Premises and equipment	459
Accrued interest receivable and other assets	755
Total identifiable assets acquired	1,214
Deposits	65,096
Accrued expenses and other liabilities	1,080
Total liabilities assumed	66,176
Total identifiable net liabilities assumed	(64,962)
Acquisition Of Sterling Branch [Member] | Reported Value by Acquiree [Member] | Core Deposits [Member]
Core deposit intangible ("CDI")	0
Acquisition Of Sterling Branch [Member] | Fair Value Adjustments [Member]
Cash consideration received
Total identifiable assets acquired	126
Deposits	(229)
Total liabilities assumed	(229)
Total identifiable net liabilities assumed	355
Acquisition Of Sterling Branch [Member] | Fair Value Adjustments [Member] | Core Deposits [Member]
Core deposit intangible ("CDI")	$ 126