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Goodwill And Other Intangible Assets
 12 Months Ended
Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill And Other Intangible Assets Goodwill and Other Intangible Assets
The following table presents information about the Company's intangible assets which have estimable useful lives.

December 31, 2023December 31, 2022
(In thousands)
Gross Carrying Amount
Accumulated Amortization
Valuation Allowance
 Net Amount
Gross Carrying Amount
 Accumulated Amortization
Valuation Allowance
Net Amount
Amortizable intangible assets:
Core deposit premium
$5,550 $(5,092)$— $458 $31,270 $(30,565)$— $705 
Mortgage servicing rights
13,723 (3,602)— 10,121 22,187 (11,258)— 10,929 
Total
$19,273 $(8,694)$— $10,579 $53,457 $(41,823)$— $11,634 

The carrying amount of goodwill and its allocation among segments at December 31, 2023 and 2022 is shown in the table below. As a result of ongoing assessments, no impairment of goodwill was recorded in 2023, 2022 or 2021. Further, the annual assessment of qualitative factors on January 1, 2024 revealed no likelihood of impairment as of that date.

(In thousands)December 31, 2023December 31, 2022
Consumer segment$70,721 $70,721 
Commercial segment75,072 67,454 
Wealth segment746 746 
Total goodwill$146,539 $138,921 
In addition to its intangible assets with estimable useful lives included in the table above, the Company also has a $3.6 million intangible asset for an easement in connection with a commercial office complex in Clayton, Missouri. The easement, which grants the Company access to all portions of the parking facility and terrace garden, is perpetual and will be assessed for impairment at least annually, or whenever events or circumstances indicate an impairment may have occurred. No impairment was identified at December 31, 2023.

Changes in the net carrying amount of goodwill and other net intangible assets for the years ended December 31, 2023 and 2022 are shown in the following table.

(In thousands)
Goodwill
Easement
Core Deposit Premium
Mortgage Servicing Rights
Balance at December 31, 2021
$138,921 $3,600 $1,004 $10,966 
Originations, net of disposals— — — 1,317 
Amortization— — (299)(1,658)
Impairment recovery— — — 304 
Balance at December 31, 2022
138,921 3,600 705 10,929 
Acquisition7,618 — — — 
Originations, net of disposals— — — 340 
Amortization— — (247)(1,148)
Balance at December 31, 2023
$146,539 $3,600 $458 $10,121 

During 2023, the Company wrote off $25.7 million of core deposit intangible assets that were fully amortized. Also during 2023, the Company acquired L.J. Hart & Company, a municipal bond underwriter and advisor, and the acquisition resulted in goodwill of $7.6 million.
Mortgage servicing rights (MSRs) are initially recorded at fair value and subsequently amortized over the period of estimated servicing income. They are periodically reviewed for impairment at a tranche level, and if impairment is indicated, recorded at fair value. Temporary impairment, including impairment recovery, is effected through a change in a valuation allowance. During 2023, no impairment or impairment recovery was recognized. The fair value of the MSRs is based on the present value of expected future cash flows, as further discussed in Note 17 on Fair Value Measurements.

Aggregate amortization expense on intangible assets for the years ended December 31, 2023, 2022 and 2021 was $1.4 million, $2.0 million and $3.1 million, respectively. The following table shows the estimated future amortization expense based on existing asset balances and the interest rate environment as of December 31, 2023. The Company’s actual amortization expense in any given period may be different from the estimated amounts depending upon the acquisition of intangible assets, changes in mortgage interest rates, prepayment rates and other market conditions.

(In thousands)
2024$1,315 
20251,153 
20261,007 
2027867 
2028752