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Note 12 - Segment Data - Operating Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Revenues | [1] | $ 58,170 |  | $ 50,645 |  |
Sterilization and Disinfection Control (b) |  | 37,249 |  | 31,183 |  |
Operating expense |  | 31,669 |  | 31,847 |  |
Operating income (loss) |  | 5,580 |  | (664) |  |
Nonoperating expense, net |  | (1,675) |  | (273) |  |
Sterilization and Disinfection Control [Member] |  |  |  |  |  |
Revenues |  |  |  |  | $ 58,170 |
Clinical Genomics [Member] |  |  |  |  |  |
Revenues | [2] |  |  |  |  | $ 50,645
Operating Segments [Member] |  |  |  |  |  |
Operating expense |  | 31,669 |  | 31,847 |  |
Operating income (loss) |  | 5,580 |  | (664) |  |
Nonoperating expense, net |  | 1,675 |  | 273 |  |
Earnings (loss) before income taxes |  | 3,905 |  | (937) |  |
Operating Segments [Member] | Sterilization and Disinfection Control [Member] |  |  |  |  |  |
Revenues | [1],[3] | 22,957 | [4] | 15,927 |  |
Sterilization and Disinfection Control (b) | [3] | 15,558 |  | 11,591 |  |
Operating Segments [Member] | Clinical Genomics [Member] |  |  |  |  |  |
Revenues | [1] | 11,404 |  | 13,369 |  |
Sterilization and Disinfection Control (b) |  | 6,490 |  | 6,728 |  |
Operating Segments [Member] | Biopharmaceutical Development [Member] |  |  |  |  |  |
Revenues | [1] | 12,008 |  | 9,889 |  |
Sterilization and Disinfection Control (b) |  | 7,959 |  | 6,433 |  |
Operating Segments [Member] | Calibration Solutions [Member] |  |  |  |  |  |
Revenues | [1] | 11,801 |  | 11,460 |  |
Sterilization and Disinfection Control (b) |  | $ 7,242 |  | $ 6,431 |  |
[1] | Intersegment revenues are not significant and are eliminated to arrive at consolidated totals.
[2] | Revenues in the Clinical Genomics division represent transactions subsequent to the acquisition of Agena Bioscience, Inc. on October 20, 2021.
[3] | Includes post-acquisition GKE results during the three months ended June 30, 2024.
[4] | Revenues of $6,254 from GKE are included in the Sterilization and Disinfection Control division during the three months ended June 30, 2024.

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