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Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans (Parenthetical) (Detail)	Mar. 31, 2025 USD ($) Borrower	Dec. 31, 2024 USD ($) Borrower
Financing Receivable, Impaired [Line Items]
Number of borrowers with loan balance greater than one million | Borrower	12	6
Borrowers with large amount of loans outstanding, minimum amount of loans per borrower	$ 1,000,000	$ 1,000,000
Borrowers with large amount of loans outstanding, net	34,700,000	13,100,000
Non-accrual loans	81,489,000	$ 39,752,000
Premier Financial Corporation [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	$ 26,900,000

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- Definition

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+ References

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- Definition

Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (3)
-Publisher SEC

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (2)
-Publisher SEC

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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Large amount of nonaccrual loans, outstanding, minimum loan amount per borrower.

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Large amount of nonaccrual loans, outstanding, net loan amount of all borrowers.

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Number of borrowers with nonaccrual Loan advances outstanding greater than one million U.S. dollars.

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