| Schedule of Segment Reporting Information, by Segment |
The measures of segment profit and loss for of our single reportable segment were as follows (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended
June 30, | | Six Months Ended
June 30, | | 2025 | | 2024 | | 2025 | | 2024 | Net revenues from external customers(1) | $ | 86,188 | | | $ | 87,002 | | | $ | 174,176 | | | $ | 159,976 | | | | | | | | | | | Significant segment expenses: | | | | | | | | | Personnel costs | 51,551 | | | 48,051 | | | 103,751 | | | 93,967 | | | Organizational and business development costs | 14,487 | | | 11,835 | | | 28,716 | | | 22,835 | | | Inventory usage | 5,458 | | | 5,013 | | | 10,189 | | | 9,800 | | | Clinical studies and publication costs | 1,923 | | | 3,177 | | | 4,008 | | | 5,814 | | | Professional services | 2,298 | | | 2,420 | | | 5,874 | | | 5,544 | | | Other segment items | 5,948 | | | 7,586 | | | 42,963 | | | 15,630 | | | Segment income (loss) | $ | 4,523 | | | $ | 8,920 | | | $ | (21,325) | | | $ | 6,386 | |
(1)For information on disaggregation of segment revenue by type and information about payor concentration, see Note 3.
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| Schedule of Other Segment Items |
Other amounts included in the measure of segment profit or loss were as follows (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended
June 30, | | Six Months Ended
June 30, | | | 2025 | | 2024 | | 2025 | | 2024 | | Interest income | | $ | 2,944 | | | $ | 3,144 | | | $ | 6,043 | | | $ | 6,140 | | | Interest expense | | $ | (21) | | | $ | (270) | | | $ | (38) | | | $ | (284) | | | Depreciation and amortization | | $ | 3,414 | | | $ | 3,348 | | | $ | 33,178 | | | $ | 6,688 | | | Income tax benefit | | $ | (4,666) | | | $ | (1,034) | | | $ | (5,089) | | | $ | (989) | | | Stock-based compensation expense | | $ | 11,208 | | | $ | 13,179 | | | $ | 22,387 | | | $ | 25,854 | | | Changes in fair value of trading securities | | $ | 1,185 | | | $ | — | | | $ | (240) | | | $ | — | | | | | | | | | | |
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