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Note 11 - Segment Data - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024
Revenues (a): |  | $ 59,543 |  | $ 58,170 |
Total segment cost of revenues |  | 22,604 |  | 20,921 |
Gross Profit (c) |  | 36,939 |  | 37,249 |
Operating expense |  | 33,875 |  | 31,669 |
Operating income |  | 3,064 |  | 5,580 |
Nonoperating (income), net |  | 3,948 |  | (1,675) |
Non-cash GKE inventory step-up amortization |  | 0 |  | 778 |
Nonoperating expense, net |  | 3,948 |  | (1,675) |
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] |  |  |  |  |
Revenues (a): | [1] | 59,543 |  | 58,170 |
Depreciation in cost of revenues |  | 810 |  | 862 |
Amortization in cost of revenues |  | 702 |  | 647 |
Other cost of revenues (b) | [2] | 21,092 |  | 18,634 |
Total segment cost of revenues |  | 22,604 |  | 20,921 |
Gross Profit (c) | [3] | 36,939 |  | 37,249 |
Operating expense |  | 33,875 |  | 31,669 |
Operating income |  | 3,064 |  | 5,580 |
Nonoperating (income), net |  | (3,948) |  | 1,675 |
Earnings before income taxes |  | 7,012 |  | 3,905 |
Non-cash GKE inventory step-up amortization | [4] |  |  | 778 |
Nonoperating expense, net |  | (3,948) |  | 1,675 |
Sterilization and Disinfection Control [Member] | Operating Segments [Member] |  |  |  |  |
Revenues (a): | [1] | 25,410 | [5] | 22,957 | [6]
Depreciation in cost of revenues |  | 450 |  | 419 |
Amortization in cost of revenues |  | 139 |  | 111 |
Other cost of revenues (b) | [2] | 6,655 |  | 6,091 |
Total segment cost of revenues |  | 7,244 |  | 7,399 |
Gross Profit (c) | [3] | 18,166 |  | 15,558 |
Non-cash GKE inventory step-up amortization | [7] |  |  | 778 |
Biopharmaceutical Development [Member] | Operating Segments [Member] |  |  |  |  |
Revenues (a): | [1] | 11,486 |  | 12,008 |
Depreciation in cost of revenues |  | 89 |  | 46 |
Amortization in cost of revenues |  | 372 |  | 345 |
Other cost of revenues (b) | [2] | 4,719 |  | 3,658 |
Total segment cost of revenues |  | 5,180 |  | 4,049 |
Gross Profit (c) | [3] | 6,306 |  | 7,959 |
Non-cash GKE inventory step-up amortization |  |  |  | 0 |
Calibration Solutions [Member] | Operating Segments [Member] |  |  |  |  |
Revenues (a): | [1] | 12,350 |  | 11,801 |
Depreciation in cost of revenues |  | 105 |  | 185 |
Amortization in cost of revenues |  | 0 |  | 0 |
Other cost of revenues (b) | [2] | 5,203 |  | 4,374 |
Total segment cost of revenues |  | 5,308 |  | 4,559 |
Gross Profit (c) | [3] | 7,042 |  | 7,242 |
Non-cash GKE inventory step-up amortization |  |  |  | 0 |
Clinical Genomics [Member] | Operating Segments [Member] |  |  |  |  |
Revenues (a): | [1] | 10,297 |  | 11,404 |
Depreciation in cost of revenues |  | 166 |  | 212 |
Amortization in cost of revenues |  | 191 |  | 191 |
Other cost of revenues (b) | [2] | 4,515 |  | 4,511 |
Total segment cost of revenues |  | 4,872 |  | 4,914 |
Gross Profit (c) | [3] | $ 5,425 |  | 6,490 |
Non-cash GKE inventory step-up amortization |  |  |  | $ 0 |
[1] | Intersegment revenues are not significant and are eliminated to arrive at consolidated totals. Revenues as presented are consistent with GAAP measurement principles and our CODM's review of segment information.
[2] | Other segment cost of revenues for each reportable segment includes product costs, personnel costs (including stock-based compensation), and other manufacturing and overhead costs necessary to produce and sell our products and services, excluding depreciation, amortization and any non-cash inventory step-up amortization expense.
[3] | Gross profit as presented is consistent with GAAP measurement principles and our CODM's review of segment information.
[4] | Unallocated corporate expenses and other business activities are reported within Corporate and Other. Certain depreciation expense classified reflected in Corporate and Other in fiscal years 2024 and 2023 has been recast to conform to current year presentation.
[5] | Revenues of $24,815 from GKE are included in the Sterilization and Disinfection Control division during the year ended March 31, 2025.
[6] | Revenues of $9,289 from GKE are included in the Sterilization and Disinfection Control division during the year ended March 31, 2024 and represent sales made beginning from the acquisition date.
[7] | Includes GKE results beginning upon acquisition in fiscal year 2024.

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