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Fair Value - Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Financial Assets |  |
HTM debt securities | $ 598,604 | $ 635,186
Time deposits with other banks | 30,852 | 3,215
Loans, net | 10,816,720 | 10,161,895
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Financial Assets |  |
Time deposits with other banks | 0 | 0
Loans, net | 0 | 0
Financial Liabilities |  |
Deposits | 0 | 0
FHLB borrowings | 0 | 0
Long-term debt | 0 | 0
Significant Other Observable Inputs (Level 2) |  |
Financial Assets |  |
Time deposits with other banks | 30,893 | 3,194
Loans, net | 0 | 0
Financial Liabilities |  |
Deposits | 0 | 0
FHLB borrowings | 688,206 | 243,795
Long-term debt | 100,606 | 95,563
Significant Unobservable Inputs (Level 3) |  |
Financial Assets |  |
Time deposits with other banks | 0 | 0
Loans, net | 10,648,107 | 10,019,964
Financial Liabilities |  |
Deposits | 13,090,137 | 12,242,205
FHLB borrowings | 0 | 0
Long-term debt | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Financial Assets |  |
HTM debt securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |  |
Financial Assets |  |
HTM debt securities | 498,384 | 507,594
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |
Financial Assets |  |
HTM debt securities | 0 | 0
Carrying Value |  |
Financial Assets |  |
Time deposits with other banks | 30,852 | 3,215
Loans, net | 10,815,824 | 10,160,056
Financial Liabilities |  |
Deposits | 13,090,319 | 12,242,427
FHLB borrowings | 690,000 | 245,000
Long-term debt | 107,464 | 106,966
Carrying Value | Fair Value, Measurements, Recurring |  |
Financial Assets |  |
HTM debt securities | $ 598,604 | $ 635,186

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- Definition Amount excluding accrued interest, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-5 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-5 + Details
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- Definition Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E + Details
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