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Goodwill And Other Intangible Assets | 9 Months Ended
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Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill And Other Intangible Assets | Goodwill and Other Intangible AssetsWe are required to review goodwill and indefinite-lived intangible assets annually for impairment. Goodwill impairment is tested at the reporting unit level on an annual basis and between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. The goodwill balance was $171.1 million as of September 30, 2021 and December 31, 2020. The following table summarizes intangible assets with determinable useful lives by major category which are included in "Other Assets" on our Condensed Consolidated Balance Sheets:
Intangible Assets
| As of September 30, 2021 |  | As of December 31, 2020
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
| (Dollars in thousands)
Trade name | $ | 22,500 |  |  | $ | (13,445) |  |  | $ | 9,055 |  |  | $ | 22,500 |  |  | $ | (11,932) |  |  | $ | 10,568 |
Technological know-how | 55,300 |  |  | (37,467) |  |  | 17,833 |  |  | 55,300 |  |  | (34,091) |  |  | 21,209 |
Customer–related intangible | 64,500 |  |  | (27,112) |  |  | 37,388 |  |  | 64,500 |  |  | (23,848) |  |  | 40,652 |
Total finite-lived intangible assets | $ | 142,300 |  |  | $ | (78,024) |  |  | $ | 64,276 |  |  | $ | 142,300 |  |  | $ | (69,871) |  |  | $ | 72,429 |
Amortization expense of intangible assets was $2.7 million and $2.8 million in the three months ended September 30, 2021 and 2020, respectively, and $8.2 million and $8.7 million in the nine months ended September 30, 2021 and 2020, respectively. Estimated amortization expense will be approximately $2.6 million for the remainder of 2021, $10.1 million in 2022, $9.2 million in 2023, $8.0 million in 2024 and $7.3 million in 2025.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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