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v3.20.2

Goodwill by Business Segment (Detail) - USD ($) $ in Thousands | 12 Months Ended
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May 31, 2020 | May 31, 2019
Goodwill [Line Items] |  |  |
Beginning Balance |  | $ 103,619 | $ 99,558
Goodwill acquired |  | 8,349 | 4,992
Goodwill and/or currency adjustments | [1] | (1,628) | (931)
Ending Balance |  | 110,340 | 103,619
Food Safety |  |  |
Goodwill [Line Items] |  |  |
Beginning Balance |  | 42,553 | 40,001
Goodwill acquired |  | 6,254 | 3,796
Goodwill and/or currency adjustments | [1] | (1,592) | (1,244)
Ending Balance |  | 47,215 | 42,553
Animal Safety |  |  |
Goodwill [Line Items] |  |  |
Beginning Balance |  | 61,066 | 59,557
Goodwill acquired |  | 2,095 | 1,196
Goodwill and/or currency adjustments | [1] | (36) | 313
Ending Balance |  | $ 63,125 | $ 61,066
[1] | Includes final purchase price allocation adjustments and currency adjustments for goodwill recorded at international locations.

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- Definition Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e961-128460 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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