(8)    Goodwill and Intangibles
Goodwill was $575.3 million as of December 31, 2025 and 2024.
The following table displays the changes in the gross carrying amount of goodwill (in thousands):
Carrying Amount
Balance at December 31, 2023$536,351 
Noetic acquisition38,917 
Balance at December 31, 2024575,268 
Balance at December 31, 2025$575,268 
The following table presents details of our intangible assets which include acquired identifiable intangible assets and capitalized internal-use software costs (in thousands):
As of December 31, 2025As of December 31, 2024
Weighted-Average Estimated Useful Life (years)Gross Carrying
Amount
Accumulated
Amortization
Net Book ValueGross Carrying
Amount
Accumulated
Amortization
Net Book Value
Intangible assets subject to amortization:
Developed technology6.3$146,855 $(111,886)$34,969 $146,855 $(94,193)$52,662 
Customer relationships4.312,000 (11,906)94 12,000 (10,363)1,637 
Trade names5.02,619 (2,619)— 2,619 (2,559)60 
Total acquired intangible assets161,474 (126,411)35,063 161,474 (107,115)54,359 
Internal-use software3.083,934 (53,892)30,042 68,878 (37,518)31,360 
Total intangible assets$245,408 $(180,303)$65,105 $230,352 $(144,633)$85,719 
Intangible assets are expensed on a straight-line basis over the useful life of the asset. Amortization expense was $35.7 million, $33.8 million, and $31.9 million for the years ended December 31, 2025, 2024 and 2023, respectively.
Estimated future amortization expense of the acquired identifiable intangible assets and completed capitalized internal-use software costs as of December 31, 2025 was as follows (in thousands):
2026$28,868 
202716,478 
20286,113 
20293,243 
20303,243 
2031 and thereafter1,166 
Total$59,111 
The table above excludes the impact of $6.0 million of capitalized internal-use software costs for projects that have not been completed as of December 31, 2025, and therefore, all the costs associated with these projects have not been incurred.

Historical Timeline

Fiscal YearFiled
2025Feb 19, 2026Showing above
2024Feb 28, 2025
2023Feb 26, 2024
2022Feb 24, 2023
2021Feb 24, 2022
2020Feb 26, 2021
2019Feb 28, 2020
2018Feb 28, 2019
2017Mar 8, 2018
2016Mar 9, 2017
2015Mar 10, 2016

About Goodwill & Intangibles Disclosures

Goodwill and intangible asset disclosures reveal the premium paid in acquisitions and how management assesses whether that premium retains its value. Since goodwill is no longer amortized under US GAAP, the annual impairment test is the only mechanism that adjusts carrying values downward — making the assumptions behind that test critically important for investors.

Key signals: a history of goodwill impairments suggests management consistently overpays for acquisitions. Watch the gap between reporting unit fair value and carrying amount — when fair value exceeds carrying amount by less than 10-20%, a small decline in business performance could trigger a write-down. For finite-lived intangibles, examine useful life assumptions across customer relationships, technology, and trade names; aggressive estimates inflate near-term earnings. Compare total intangibles-to-total-assets ratios against peers to assess acquisition dependency. Rising goodwill as a percentage of equity can signal balance sheet fragility.