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Intangible assets, net | 12 Months Ended
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Dec. 31, 2023
Intangible assets, net [Abstract] |
Intangible assets, net | 5. Intangible assets, net Identifiable intangible assets are recorded in Intangible assets, net in the accompanying Consolidated Balance Sheets and are comprised of the following:
|  | December 31, |
|  | 2023 |  |  | 2022 |
(In thousands) |  | Gross Amount |  |  | Accumulated Amortization |  |  | Gross Amount |  |  | Accumulated Amortization |
Purchased technology |  | $ | 1,591 |  |  | $ | (1,503 | ) |  | $ | 1,591 |  |  | $ | (1,349 | )
Patents |  |  | 15 |  |  |  | (15 | ) |  |  | 15 |  |  |  | (15 | )
Total |  | $ | 1,606 |  |  | $ | (1,518 | ) |  | $ | 1,606 |  |  | $ | (1,364 | )
Amortization expense was $154 thousand and $155 thousand in 2023 and 2022, respectively. Amortization expense for each of the next five years ending December 31 is expected to be as follows: $88 thousand in 2024; and none thereafter.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//350-30/tableOfContent + Details
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