Note 3 - Acquisitions - Assets Acquired and Liabilities Assumed, and Fair Value Adjustments (Details) - USD ($) $ in Thousands		9 Months Ended
	Jan. 14, 2022	Sep. 30, 2023	Sep. 30, 2022
Cash and cash equivalents	$ 312
Loans, gross	7,390
Bank premises and equipment	(12)
Core deposit intangible	729
Other assets	52
Total assets acquired	8,495
Deposits	81,700
Escrow Payable	2
Other liabilities	88
Total liabilities assumed	81,790
Excess of assets acquired over liabilities assumed	(73,295)
Cash received	(71,040)	$ (0)	$ (71,352)
Goodwill recognized	2,255
Reported Value Measurement [Member]
Cash and cash equivalents	312
Loans, gross	7,352
Bank premises and equipment	(12)
Core deposit intangible	0
Other assets	412
Total assets acquired	8,088
Deposits	81,673
Escrow Payable	2
Other liabilities	460
Total liabilities assumed	82,135
Excess of assets acquired over liabilities assumed	(74,047)
Changes Measurement [Member]
Cash and cash equivalents	0
Loans, gross	38
Bank premises and equipment	(0)
Core deposit intangible	729
Other assets	(360)
Total assets acquired	407
Deposits	27
Escrow Payable	0
Other liabilities	(372)
Total liabilities assumed	(345)
Excess of assets acquired over liabilities assumed	$ 752