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Segment Information and Foreign Operations | 6 Months Ended
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Jun. 30, 2023
Segment Information and Foreign Operations |
Segment Information and Foreign Operations | Note 11. Segment Information and Foreign Operations ​ Segment Information ​ We operate in one segment for the design, development, manufacture and distribution of high-performance compound and single element semiconductor substrates and sale of raw materials integral to these substrates. In accordance with ASC Topic 280, Segment Reporting, our chief operating decision maker has been identified as the Chief Executive Officer, who reviews operating results to make decisions about allocating resources and assessing performance for the Company. Since we operate in one segment, all financial segment and product line information can be found in the condensed consolidated financial statements. ​ Product Information ​ The following table represents revenue amounts (in thousands) by product type: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended | ​ | ​
​ | ​ | June 30, | ​ | June 30, | ​ | ​
​ |  | 2023 |  | 2022 |  | 2023 |  | 2022 |  |
Product Type: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Substrates | ​ | $ | 11,027 | ​ | $ | 31,694 | ​ | $ | 24,516 | ​ | $ | 63,439 | ​ | ​
Raw Materials and Other | ​ |  | 7,568 | ​ |  | 7,793 | ​ |  | 13,484 | ​ |  | 15,701 | ​ | ​
Total | ​ | $ | 18,595 | ​ | $ | 39,487 | ​ | $ | 38,000 | ​ | $ | 79,140 | ​ | ​
​ Geographical Information ​ The following table represents revenue amounts (in thousands) reported for products shipped to customers in the corresponding geographic region: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended | ​ | ​
​ | ​ | June 30, | ​ | June 30, | ​ | ​
​ |  | 2023 |  | 2022 |  | 2023 |  | 2022 |  |
Geographical region: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
China | ​ | $ | 10,289 | ​ | $ | 18,445 | ​ | $ | 18,391 | ​ | $ | 35,925 | ​ | ​
Taiwan | ​ | ​ | 1,407 | ​ | ​ | 7,044 | ​ | ​ | 3,878 | ​ | ​ | 13,903 | ​ | ​
Japan | ​ |  | 1,396 | ​ |  | 2,718 | ​ |  | 2,931 | ​ |  | 5,525 | ​ | ​
Asia Pacific (excluding China, Taiwan and Japan) | ​ | ​ | 737 | ​ | ​ | 662 | ​ | ​ | 1,828 | ​ | ​ | 2,418 | ​ | ​
Europe (primarily Germany) | ​ | ​ | 3,015 | ​ | ​ | 5,299 | ​ | ​ | 6,585 | ​ | ​ | 11,693 | ​ | ​
North America (primarily the United States) | ​ |  | 1,751 | ​ |  | 5,319 | ​ | ​ | 4,387 | ​ | ​ | 9,676 | ​ | ​
Total | ​ | $ | 18,595 | ​ | $ | 39,487 | ​ | $ | 38,000 | ​ | $ | 79,140 | ​ | ​
​ Long-lived assets consist primarily of property, plant and equipment and operating lease right-of-use assets, and are attributed to the geographic location in which they are located. Long-lived assets, net of depreciation, by geographic region were as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of | ​
​ | ​ | June 30, | ​ | December 31, | ​
​ |  | 2023 |  | 2022 |
Long-lived assets by geographic region, net of depreciation: | ​ | ​ | ​ | ​ | ​ | ​ | ​
North America | ​ | $ | 218 | ​ | $ | 346 | ​
China | ​ |  | 159,927 | ​ |  | 162,432 | ​
​ | ​ | $ | 160,145 | ​ | $ | 162,778 | ​
​ Significant Customers ​ No customers represented 10% of our revenue for the three months ended June 30, 2023 and one customer, Landmark, represented 12% of our revenue for the three months ended June 30, 2022. Our top five customers, although not the same five customers for each period, represented 24% and 35% of our revenue for the three months ended June 30, 2023 and 2022, respectively. ​ No customers represented 10% of our revenue for the six months ended June 30, 2023 and one customer, Landmark, represented 11% of our revenue for the six months ended June 30, 2022. Our top five customers, although not the same five customers for each period, represented 24% and 32% of our revenue for the six months ended June 30, 2023 and 2022, respectively. ​ We perform ongoing credit evaluations of our customers’ financial condition, and limit the amount of credit extended when deemed necessary, but generally do not require collateral. No customers accounted for 10% of our accounts receivable balance as of June 30, 2023, and two customers accounted for more than 10% of our accounts receivable as of December 31, 2022.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-22 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-15 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-31 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-42 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-40 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//280/tableOfContent Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 26 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-26 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-34 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-41 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-21 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-21 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 + Details
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