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v3.21.1

Disaggregated Revenue (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Feb. 28, 2021 | Feb. 29, 2020 | Feb. 28, 2021 | Feb. 29, 2020 | Feb. 29, 2020
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total Revenues | $ 116,709 | $ 99,869 | $ 341,034 | $ 309,096 | $ 309,096
Food Safety |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total Revenues | 58,424 | 50,498 | 170,143 |  | 158,374
Food Safety | Natural Toxins, Allergens & Drug Residues |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total Revenues | 18,255 | 17,154 | 57,271 |  | 57,950
Food Safety | Bacterial & General Sanitation |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total Revenues | 10,333 | 9,413 | 31,499 |  | 31,345
Food Safety | Culture Media & Other |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total Revenues | 14,888 | 11,222 | 39,577 |  | 35,259
Food Safety | Rodenticides, Insecticides & Disinfectants |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total Revenues | 9,644 | 7,964 | 27,230 |  | 20,859
Food Safety | Genomics Services |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total Revenues | 5,304 | 4,745 | 14,566 |  | 12,961
Animal Safety |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total Revenues | 58,285 | 49,371 | 170,891 |  | 150,722
Animal Safety | Life Sciences |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total Revenues | 1,399 | 1,376 | 4,122 |  | 4,901
Animal Safety | Animal Care & Other |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total Revenues | 8,873 | 6,667 | 25,902 |  | 20,859
Animal Safety | Veterinary Instruments & Disposables |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total Revenues | 12,494 | 10,799 | 34,843 |  | 32,621
Animal Safety | Rodenticides, Insecticides & Disinfectants |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total Revenues | 18,085 | 14,558 | 56,470 |  | 47,462
Animal Safety | Genomics Services |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total Revenues | $ 17,434 | $ 15,971 | $ 49,554 |  | $ 44,879

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