Note 2 - Business Combinations (Details Textual) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
		Aug. 01, 2025 USD ($) $ / shares shares	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jul. 31, 2025 $ / shares
Business Combination, Bargain Purchase, Gain Recognized, Amount	[1]		$ 17,827	$ 0	$ 17,827	$ 0
Share Price (in dollars per share) | $ / shares							$ 26
Northumberland Bancorp [Member]
Business Acquisition, Exchange Ratio		1.185
Business Combination, Consideration Transferred		$ 40,405
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares (in shares) | shares		1,546,725
Business Combination, Price Per Share (in dollars per share) | $ / shares		$ 26
Business Combination, Bargain Purchase, Gain Recognized, Amount		$ 17,827
Business Combination, Recognized Asset Acquired, Loans, Net Discounted Value		427,100
Financing Receivable, Purchased with Credit Deterioration, Discount (Premium)		19,600
Debt Securities, Available-for-Sale, Sold at Par Value		$ 52,800
Northumberland Bancorp [Member] | Financial Asset Acquired and No Credit Deterioration [Member]
Business Combination, Number of Loans Acquired		5,023
Northumberland Bancorp [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Business Combination, Number of Loans Acquired		379
Financing Receivable, Purchased with Credit Deterioration, Discount (Premium)		$ 194
Northumberland Bancorp [Member] | Dissenter's Shares [Member]
Business Combination, Number of Rights Shares Exercised (in shares) | shares	[2]	6,493
Business Combination, Cash Settlement of Shares, Price Per Share (in dollars per share) | $ / shares		$ 28.8
Payments to Acquire Businesses, Gross		$ 187

[1] Not within the scope of ASC 606

[2] NUBC stockholder with 6,493 shares exercised their Dissenter’s rights. The Company made a settlement with the stockholder and paid a cash settlement of $28.80 per share for a total payment of $187 thousand.