Note 4 - Loans and Other Real Estate Owned ("OREO") - Reconciliation of Purchase Price to Par Value (Details) - Northumberland Bancorp [Member] $ in Thousands	Aug. 01, 2025 USD ($)
Purchase (Premium) Discount	$ 19,600
Financial Asset Acquired and No Credit Deterioration [Member]
Par value	392,745
N N B [Member]
Par Value	53,676
Purchase (Premium) Discount	(2,157)
Allowance	725
Purchase Price	52,244
N N B [Member] \| Financial Asset Acquired and No Credit Deterioration [Member]
Par value	392,745
Purchase (Premium) Discount	(17,870)
Purchase Price	374,875
Commercial Portfolio Segment [Member] \| N N B [Member]
Par Value	18,083
Purchase (Premium) Discount	(891)
Allowance	423
Purchase Price	17,615
Commercial Portfolio Segment [Member] \| N N B [Member] \| Financial Asset Acquired and No Credit Deterioration [Member]
Par value	67,002
Purchase (Premium) Discount	(4,645)
Purchase Price	62,357
Commercial Real Estate Portfolio Segment [Member] \| N N B [Member]
Par Value	14,180
Purchase (Premium) Discount	(860)
Allowance	114
Purchase Price	13,434
Commercial Real Estate Portfolio Segment [Member] \| N N B [Member] \| Financial Asset Acquired and No Credit Deterioration [Member]
Par value	82,855
Purchase (Premium) Discount	(4,944)
Purchase Price	77,911
Residential Portfolio Segment [Member] \| N N B [Member] \| Real Estate Loan [Member]
Par Value	20,073
Purchase (Premium) Discount	(437)
Allowance	178
Purchase Price	19,814
Residential Portfolio Segment [Member] \| N N B [Member] \| Home Equity Loan [Member]
Par Value	1,077
Purchase (Premium) Discount	48
Allowance	7
Purchase Price	1,132
Residential Portfolio Segment [Member] \| N N B [Member] \| Financial Asset Acquired and No Credit Deterioration [Member] \| Real Estate Loan [Member]
Par value	209,109
Purchase (Premium) Discount	(7,169)
Purchase Price	201,940
Residential Portfolio Segment [Member] \| N N B [Member] \| Financial Asset Acquired and No Credit Deterioration [Member] \| Home Equity Loan [Member]
Par value	28,180
Purchase (Premium) Discount	(971)
Purchase Price	27,209
Consumer Portfolio Segment [Member] \| N N B [Member] \| Consumer, Other [Member]
Par Value	263
Purchase (Premium) Discount	(17)
Allowance	3
Purchase Price	249
Consumer Portfolio Segment [Member] \| N N B [Member] \| Automobile Loan [Member]
Par Value	0
Purchase (Premium) Discount	0
Allowance	0
Purchase Price	0
Consumer Portfolio Segment [Member] \| N N B [Member] \| Financial Asset Acquired and No Credit Deterioration [Member] \| Consumer, Other [Member]
Par value	5,599
Purchase (Premium) Discount	(141)
Purchase Price	5,458
Consumer Portfolio Segment [Member] \| N N B [Member] \| Financial Asset Acquired and No Credit Deterioration [Member] \| Automobile Loan [Member]
Par value	0
Purchase (Premium) Discount	0
Purchase Price	$ 0

The discount (premium) on the acquired receivables.

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- Definition

The purchase price of the acquired receivables.

+ References

No definition available.

+ Details

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- Definition

Amount of gross contractual receivable purchased without credit deterioration, acquired in business combination. Excludes purchased financial asset with credit deterioration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

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- Definition

Amount of allowance for credit loss at acquisition date of financing receivable purchased with credit deterioration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 19
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-19

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- Definition

Amount at par value of financing receivable purchased with credit deterioration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 19
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-19

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- Definition

Amount at purchase price of financing receivable purchased with credit deterioration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 19
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-19

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- Definition

Amount of discount (premium) attributable to other factors on financing receivable purchased with credit deterioration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 19
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-19

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