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Other Intangible Assets and Goodwill
 12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Other Intangible Assets and Goodwill Other Intangible Assets and Goodwill
The following table sets forth information regarding the Company’s core deposit intangibles and other intangibles:
 At or for the Years ended
(Dollars in thousands)December 31,
2024		December 31,
2023		December 31,
2022
Gross carrying value$120,912 95,120 95,120 
Accumulated amortization(69,730)(63,250)(53,519)
Net carrying value$51,182 31,870 41,601 
Aggregate amortization expense$12,757 9,731 10,658 
Estimated amortization expense for the years ending December 31,
2025$12,941 
202611,368 
20279,912 
20285,905 
20294,023 

The following schedule discloses the changes in the carrying value of goodwill:
 Years ended
(Dollars in thousands)December 31,
2024		December 31,
2023		December 31,
2022
Net carrying value at beginning of period$985,393 985,393 985,393 
Acquisitions and adjustments65,925 — — 
Net carrying value at end of period$1,051,318 985,393 985,393 
 
The Company evaluates goodwill for possible impairment utilizing a control premium analysis. The analysis first calculates the market capitalization and then adjusts such value for a control premium range which results in an implied fair value. The control premium range is determined based on historical control premiums for acquisitions that are comparable to the Company and is obtained from an independent third party. The calculated implied fair value is then compared to the book value to determine whether a goodwill impairment will be recognized and the amount of the impairment. The Company performed its annual goodwill impairment test during the third quarter of 2024 and determined the fair value of the aggregated reporting units exceeded the carrying value, such that the Company’s goodwill was not considered impaired. In recognition, there were no events or circumstances that occurred during the fourth quarter of 2024 that would more-likely-than-not reduce the fair value of a reporting unit below its carrying value, the Company did not perform interim testing at December 31, 2024. Changes in the economic environment, operations of the aggregated reporting units, or other factors could result in the decline in the fair value of the aggregated reporting units which could result in a goodwill impairment in the future. Accumulated impairment charges were $40,159,000 as of December 31, 2024 and 2023.