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Note 2 - Revenue Recognition (Tables) | 9 Months Ended
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Dec. 31, 2020
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Three Months Ended December 31, 2020 |
|  | Sterilization and Disinfection Control |  |  | Instruments |  |  | Biopharmaceutical Development |  |  | Continuous Monitoring |  |  | Corporate and Other |  |  | Total |
Discrete Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consumables |  | $ | 11,250 |  |  | $ | 717 |  |  | $ | 3,406 |  |  | $ | 9 |  |  | $ | - |  |  | $ | 15,382 |
Hardware and Software |  |  | 151 |  |  |  | 6,210 |  |  |  | 3,771 |  |  |  | 1,920 |  |  |  | - |  |  |  | 12,052 |
Services |  |  | 433 |  |  |  | 2,042 |  |  |  | 506 |  |  |  | 799 |  |  |  | - |  |  |  | 3,780 |
Contracted Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Services |  |  | 1,243 |  |  |  | 2 |  |  |  | 1,028 |  |  |  | 685 |  |  |  | - |  |  |  | 2,958 |
Total Revenues |  | $ | 13,077 |  |  | $ | 8,971 |  |  | $ | 8,711 |  |  | $ | 3,413 |  |  | $ | - |  |  | $ | 34,172 |
|  | Three Months Ended December 31, 2019 |
|  | Sterilization and Disinfection Control |  |  | Instruments |  |  | Biopharmaceutical Development |  |  | Continuous Monitoring |  |  | Corporate and Other |  |  | Total |
Discrete Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consumables |  | $ | 9,948 |  |  | $ | 781 |  |  | $ | 1,941 |  |  | $ | 13 |  |  | $ | 229 |  |  | $ | 12,912 |
Hardware and Software |  |  | 95 |  |  |  | 6,881 |  |  |  | 2,571 |  |  |  | 2,562 |  |  |  | - |  |  |  | 12,109 |
Services |  |  | 360 |  |  |  | 2,352 |  |  |  | 656 |  |  |  | 849 |  |  |  | - |  |  |  | 4,217 |
Contracted Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Services |  |  | 1,216 |  |  |  | - |  |  |  | 469 |  |  |  | 732 |  |  |  | - |  |  |  | 2,417 |
Total Revenues |  | $ | 11,619 |  |  | $ | 10,014 |  |  | $ | 5,637 |  |  | $ | 4,156 |  |  | $ | 229 |  |  | $ | 31,655 |
|  | Nine Months Ended December 31, 2020 |
|  | Sterilization and Disinfection Control |  |  | Instruments |  |  | Biopharmaceutical Development |  |  | Continuous Monitoring |  |  | Corporate and Other |  |  | Total |
Discrete Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consumables |  | $ | 32,252 |  |  | $ | 2,240 |  |  | $ | 8,583 |  |  | $ | 54 |  |  | $ | - |  |  | $ | 43,129 |
Hardware and Software |  |  | 388 |  |  |  | 16,045 |  |  |  | 10,518 |  |  |  | 6,082 |  |  |  | - |  |  |  | 33,033 |
Services |  |  | 1,389 |  |  |  | 5,922 |  |  |  | 2,293 |  |  |  | 1,944 |  |  |  | - |  |  |  | 11,548 |
Contracted Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Services |  |  | 3,667 |  |  |  | 2 |  |  |  | 2,397 |  |  |  | 2,197 |  |  |  | - |  |  |  | 8,263 |
Total Revenues |  | $ | 37,696 |  |  | $ | 24,209 |  |  | $ | 23,791 |  |  | $ | 10,277 |  |  | $ | - |  |  | $ | 95,973 |
|  | Nine Months Ended December 31, 2019 |
|  | Sterilization and Disinfection Control |  |  | Instruments |  |  | Biopharmaceutical Development |  |  | Continuous Monitoring |  |  | Corporate and Other |  |  | Total |
Discrete Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consumables |  | $ | 30,487 |  |  | $ | 2,364 |  |  | $ | 1,941 |  |  | $ | 34 |  |  | $ | 2,415 |  |  | $ | 37,241 |
Hardware and Software |  |  | 429 |  |  |  | 19,282 |  |  |  | 2,571 |  |  |  | 6,374 |  |  |  | - |  |  |  | 28,656 |
Services |  |  | 1,301 |  |  |  | 6,872 |  |  |  | 656 |  |  |  | 1,959 |  |  |  | 27 |  |  |  | 10,815 |
Contracted Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Services |  |  | 3,606 |  |  |  | - |  |  |  | 469 |  |  |  | 2,692 |  |  |  | - |  |  |  | 6,767 |
Total Revenues |  | $ | 35,823 |  |  | $ | 28,518 |  |  | $ | 5,637 |  |  | $ | 11,059 |  |  | $ | 2,442 |  |  | $ | 83,479 |
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] |
|  | Three Months Ended December 31, |  |  | Nine Months Ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
United States |  | $ | 18,480 |  |  | $ | 17,810 |  |  | $ | 52,246 |  |  | $ | 48,007 |
Foreign |  |  | 15,692 |  |  |  | 13,845 |  |  |  | 43,727 |  |  |  | 35,472 |
Total revenues |  | $ | 34,172 |  |  | $ | 31,655 |  |  | $ | 95,973 |  |  | $ | 83,479 |
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] |
Contract liabilities balance as of March 31, 2020 | $ | 7,217 |
Prior year liabilities recognized in revenues during the nine months ended December 31, 2020 |  | (4,131 | )
Contract liabilities added during the nine months ended December 31, 2020, net of revenues recognized |  | 4,984 |
Contract liabilities balance as of December 31, 2020 | $ | 8,070 |

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