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Goodwill and Other Intangible Assets | 12 Months Ended
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Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets | Goodwill and Other Intangible Assets The changes in the carrying value of goodwill for the periods indicated were as follows:
| Year Ended December 31,
| 2025 |  | 2024 |  |
| (In Thousands)
Balance at beginning of year | $ | 241,222 |  |  | $ | 241,222 |  |  |
Additions | 110,391 |  |  | — |  |  |
Balance at end of year | $ | 351,613 |  |  | $ | 241,222 |  |  |
The following is a summary of the Company's other intangible assets:
| At December 31, 2025 |  | At December 31, 2024
| Gross Amount |  | Accumulated Amortization |  | Carrying Amount |  | Gross Amount |  | Accumulated Amortization |  | Carrying Amount
| (In Thousands)
Other intangible assets: |  |  |  |  |  |  |  |  |  |  |
Core deposits | $ | 204,680 |  |  | $ | 28,400 |  |  | $ | 176,280 |  |  | $ | 32,387 |  |  | $ | 16,015 |  |  | $ | 16,372 |
Trade name | — |  |  | — |  |  | — |  |  | 1,600 |  |  | 511 |  |  | 1,089 |
Customer relationships intangible asset | 14,000 |  |  | 718 |  |  | 13,282 |  |  | — |  |  | — |  |  | — |
Total other intangible assets | $ | 218,680 |  |  | $ | 29,118 |  |  | $ | 189,562 |  |  | $ | 33,987 |  |  | $ | 16,526 |  |  | $ | 17,461 |
The addition of goodwill at December 31, 2025 is due to excess of the purchase price paid over the fair value of the net assets acquired from the Transaction. In connection with the Transaction, an intangible asset for wealth and investment services for customer relationships was recognized with a fair value of $14.0 million. The weighted-average amortization period for the intangible assets is 11.5 years. During the year ended December 31, 2025, the Company wrote off the trade name associated with BankRI in connection with the Bank Mergers. The expense was recorded in merger and restructuring expense in the accompanying consolidated statements of income. There were no impairment losses relating to other acquisition-related intangible assets recorded during the years ended December 31, 2025, 2024 and 2023. The estimated aggregate future amortization expense for other intangible assets for each of the next five years and thereafter is as follows:
Year ended December 31: | Amount
| (In Thousands)
2026 | $ | 32,506 |
2027 | 29,009 |
2028 | 25,512 |
2029 | 22,016 |
2030 | 18,519 |
Thereafter | 62,000 |
Total | $ | 189,562 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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