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Revenues | 3 Months Ended
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Mar. 31, 2025
Revenue from Contract with Customer [Abstract] |
Revenues | 6. Revenues The following tables present the Company’s net revenues disaggregated by geography based on the location of the customer, by product line (in thousands):
|  | Three Months Ended March 31, 2025 |
|  | Brick Products |  |  | Advanced Products |  |  | Total |
United States |  | $ | 13,535 |  |  | $ | 23,307 |  |  | $ | 36,842 |
Europe |  |  | 7,773 |  |  |  | 2,100 |  |  |  | 9,873 |
Asia Pacific |  |  | 12,801 |  |  |  | 34,286 |  |  |  | 47,087 |
All other |  |  | 2 |  |  |  | 164 |  |  |  | 166 |
|  | $ | 34,111 |  |  | $ | 59,857 |  |  | $ | 93,968 |
|  | Three Months Ended March 31, 2024 |
|  | Brick Products |  |  | Advanced Products |  |  | Total |
United States |  | $ | 20,974 |  |  | $ | 27,186 |  |  | $ | 48,160 |
Europe |  |  | 6,857 |  |  |  | 3,999 |  |  |  | 10,856 |
Asia Pacific |  |  | 12,268 |  |  |  | 12,052 |  |  |  | 24,320 |
All other |  |  | 493 |  |  |  | 43 |  |  |  | 536 |
|  | $ | 40,592 |  |  | $ | 43,280 |  |  | $ | 83,872 |
The following tables present the Company’s net revenues disaggregated by the category of revenue, by product line (in thousands):
|  | Three Months Ended March 31, 2025 |
|  | Brick Products |  |  | Advanced Products |  |  | Total |
Direct customers, contract manufacturers and non-stocking distributors |  | $ | 18,282 |  |  | $ | 43,488 |  |  | $ | 61,770 |
Stocking distributors, net of sales allowances |  |  | 15,364 |  |  |  | 3,846 |  |  |  | 19,210 |
Non-recurring engineering |  |  | 465 |  |  |  | 1,401 |  |  |  | 1,866 |
Royalties |  |  | — |  |  |  | 10,762 |  |  |  | 10,762 |
Other |  |  | — |  |  |  | 360 |  |  |  | 360 |
|  | $ | 34,111 |  |  | $ | 59,857 |  |  | $ | 93,968 |
|  | Three Months Ended March 31, 2024 |
|  | Brick Products |  |  | Advanced Products |  |  | Total |
Direct customers, contract manufacturers and non-stocking distributors |  | $ | 20,810 |  |  | $ | 21,640 |  |  | $ | 42,450 |
Stocking distributors, net of sales allowances |  |  | 19,407 |  |  |  | 9,632 |  |  |  | 29,039 |
Non-recurring engineering |  |  | 375 |  |  |  | 3,468 |  |  |  | 3,843 |
Royalties |  |  | — |  |  |  | 8,180 |  |  |  | 8,180 |
Other |  |  | — |  |  |  | 360 |  |  |  | 360 |
|  | $ | 40,592 |  |  | $ | 43,280 |  |  | $ | 83,872 |
The following table presents the changes in certain contract liabilities (in thousands):
|  | March 31, 2025 |  |  | December 31, 2024 |  |  | Change |
Short-term deferred revenue and customer prepayments |  | $ | (6,624 | ) |  | $ | (5,312 | ) |  | $ | (1,312 | )
Sales allowances |  |  | (2,114 | ) |  |  | (1,667 | ) |  |  | (447 | )
The Company records deferred revenue, which represents a contract liability, when cash payments are received or due in advance of performance under a contract with a customer. The Company recognized revenue of $1,326,000 and $360,000 for the three months ended March 31, 2025 and 2024, respectively, that was included in deferred revenue at the beginning of the respective period.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-9 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-15 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-13 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 606 -Publisher FASB -URI https://asc.fasb.org/606/tableOfContent + Details
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