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Note 13 - Segment Information - Operating Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Total revenues | [1] | $ 34,172 | $ 31,655 | $ 95,973 | $ 83,479
Gross profit (loss) |  | 20,653 | 14,803 | 62,278 | 46,593
Reconciling items | [2] | (26,380) | (19,880) | (64,867) | (42,471)
(Loss) before income taxes |  | (5,727) | (5,077) | (2,589) | 4,122
Corporate, Non-Segment [Member] |  |  |  |  |
Total revenues | [1] | 0 | 229 | 0 | 2,442
Gross profit (loss) |  | (140) | (18) | (76) | 395
Sterilization and Disinfection Control [Member] | Operating Segments [Member] |  |  |  |  |
Total revenues | [1] | 13,077 | 11,619 | 37,696 | 35,823
Gross profit (loss) |  | 9,308 | 8,101 | 28,098 | 25,334
Instruments [Member] | Operating Segments [Member] |  |  |  |  |
Total revenues | [1] | 8,971 | 10,014 | 24,209 | 28,518
Gross profit (loss) |  | 5,368 | 6,526 | 14,909 | 18,164
Biopharmaceutical Development [Member] | Operating Segments [Member] |  |  |  |  |
Total revenues | [1] | 8,711 | 5,637 | 23,791 | 5,637
Gross profit (loss) |  | 4,616 | (1,294) | 15,294 | (1,294)
Cold Chain Monitoring [Member] | Operating Segments [Member] |  |  |  |  |
Total revenues | [1] | 3,413 | 4,156 | 10,277 | 11,059
Gross profit (loss) |  | $ 1,501 | $ 1,488 | $ 4,053 | $ 3,994
[1] | Intersegment revenues are not significant and are eliminated to arrive at consolidated totals.
[2] | Reconciling items include selling, general and administrative, research and development, interest expense and amortization of debt discount, and other (income) expenses.

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