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Intangible Assets | 12 Months Ended
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Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets | 7. INTANGIBLE ASSETS Patent costs, which are included in Other assets in the accompanying Conso lidated Balance Sheets, as of December 31 were as follows (in thousands):
|  | 2022 |  |  | 2021 |
Patent costs |  | $ | 1,030 |  |  | $ | 1,686 |
Accumulated amortization |  |  | (772 | ) |  |  | (1,354 | )
|  | $ | 258 |  |  | $ | 332 |
Definite lived intangible assets, such as patent rights, are amortized and tested for impairment if a triggering event occurs. As of December 31, 2022, we had $3,202,000 of capitalized internal-use so ftw are costs which have not been amortized as the software has not yet been placed in service. Amortization expense was approximately $75,000, $96,000 and $106,000 in 2022, 2021, and 2020, respectively.

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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 https://asc.fasb.org/topic&trid=2144416 + Details
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