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Note 12 - Segment Data - Operating Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2022
Revenues |  | $ 54,287 | $ 54,696 | $ 163,489 | $ 125,456 |
Total revenues |  | 54,287 | 54,696 | 163,489 | 125,456 |
Gross profit (loss) |  | 32,765 | 28,627 | 100,492 | 73,978 |
Gross profit (loss) |  | 32,765 | 28,627 | 100,492 | 73,978 |
Operating expenses |  | 29,363 | 31,139 | 97,689 | 69,166 |
Operating income (loss) |  | 3,402 | (2,512) | 2,803 | 4,812 |
Nonoperating expense (income), net |  | 1,486 | (171) | 2,915 | 1,192 |
Earnings (loss) before income taxes |  | 1,916 | (2,341) | (112) | 3,620 |
Total inventories |  | 33,739 |  | 33,739 |  | $ 24,606
Operating Segments [Member] |  |  |  |  |  |
Revenues | [1] | 54,287 | 54,696 | 163,489 | 125,456 |
Total revenues | [1] | 54,287 | 54,696 | 163,489 | 125,456 |
Gross profit (loss) |  | 32,758 | 28,727 | 100,520 | 74,174 |
Gross profit (loss) |  | 32,758 | 28,727 | 100,520 | 74,174 |
Operating expenses |  | 29,363 | 31,139 | 97,689 | 69,166 |
Operating income (loss) |  | 3,402 | (2,512) | 2,803 | 4,812 |
Nonoperating expense (income), net |  | 1,486 | (171) | 2,915 | 1,192 |
Operating Segments [Member] | Clinical Genomics [Member] |  |  |  |  |  |
Revenues |  | 15,585 | 16,485 | 48,525 | 16,485 |
Total revenues |  | 15,585 | 16,485 | 48,525 | 16,485 |
Gross profit (loss) |  | 8,045 | 3,924 | 26,535 | 3,924 |
Gross profit (loss) |  | 8,045 | 3,924 | 26,535 | 3,924 |
Total inventories |  | 14,591 |  | 14,591 |  | 11,802
Operating Segments [Member] | Sterilization and Disinfection Control [Member] |  |  |  |  |  |
Revenues |  | 16,283 | 13,831 | 48,021 | 43,014 |
Total revenues |  | 16,283 | 13,831 | 48,021 | 43,014 |
Gross profit (loss) |  | 11,614 | 9,945 | 34,581 | 31,859 |
Gross profit (loss) |  | 11,614 | 9,945 | 34,581 | 31,859 |
Total inventories |  | 3,022 |  | 3,022 |  | 2,176
Operating Segments [Member] | Biopharmaceutical Development [Member] |  |  |  |  |  |
Revenues |  | 11,646 | 12,756 | 34,757 | 32,188 |
Total revenues |  | 11,646 | 12,756 | 34,757 | 32,188 |
Gross profit (loss) |  | 7,359 | 8,768 | 21,993 | 20,061 |
Gross profit (loss) |  | 7,359 | 8,768 | 21,993 | 20,061 |
Total inventories |  | 7,797 |  | 7,797 |  | 4,495
Operating Segments [Member] | Calibration Solutions [Member] |  |  |  |  |  |
Revenues | [2] | 10,773 | 11,624 | 32,186 | 33,769 |
Total revenues | [2] | 10,773 | 11,624 | 32,186 | 33,769 |
Gross profit (loss) |  | 5,740 | 6,090 | 17,411 | 18,330 |
Gross profit (loss) |  | 5,740 | 6,090 | 17,411 | 18,330 |
Total inventories |  | 8,329 |  | 8,329 |  | $ 6,133
Corporate, Non-Segment [Member] |  |  |  |  |  |
Gross profit (loss) | [3] | 7 | (100) | (28) | (196) |
Gross profit (loss) | [3] | $ 7 | $ (100) | $ (28) | $ (196) |
[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 Agena Acquisition on October 20, 2021.
[3] | Non-reportable operating segments and unallocated corporate expenses are reported within Corporate and Other.

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