Loans and Allowance for Credit Losses on Loans - Aging of Past Due Loans by Class of Loans - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Aging of Past Due Loans by Class of Loans
Total loan balance	$ 3,410,563	$ 3,350,873
Nonaccrual loans	6,698	6,818
Nonaccrual loans	7,158	7,707
Past due
Aging of Past Due Loans by Class of Loans
Total loan balance	18,261	21,157
Nonaccrual loans	6,484	6,100
Current
Aging of Past Due Loans by Class of Loans
Total loan balance	3,392,302	3,329,716
Nonaccrual loans	$ 214	$ 718

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Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
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-Publisher FASB
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- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: 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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- Definition

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

+ References

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-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Regulation S-K (SK)
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-Topic 326
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