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Acquisition PCI Loans Acquired (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jul. 01, 2025 | Sep. 30, 2025 | Sep. 30, 2025
Business Combination, Acquired Receivable Purchased with Credit Deterioration [Line Items] |  |  |
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | $ (9,020) | $ (9,020)
Enterprise Bancorp, Inc |  |  |
Business Combination, Acquired Receivable Purchased with Credit Deterioration [Line Items] |  |  |
Financing Receivable, Purchased with Credit Deterioration, Amount at Purchase Price | $ 386,671 |  |
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date | (9,000) |  | $ (9,020)
Financing Receivable, Purchased with Credit Deterioration, Discount (Premium) | (10,444) |  |
Financing Receivable, Purchased with Credit Deterioration, Amount at Par Value | $ 406,135 |  |

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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 + Details
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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 + Details
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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 + Details
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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 + Details
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