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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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May. 31, 2015
Goodwill by Business Segment | The following table summarizes goodwill by reportable segment:
(in thousands) |  | Food Safety |  |  | Animal Safety |  |  | Total |
Balance, May 31, 2013 |  | $ | 16,696 |  |  | $ | 42,795 |  |  | $ | 59,491 |
Goodwill acquired and/or adjusted |  |  | 0 |  |  |  | 8,699 |  |  |  | 8,699 |
Balance, May 31, 2014 |  |  | 16,696 |  |  |  | 51,494 |  |  |  | 68,190 |
Goodwill acquired and/or adjusted |  |  | 2,110 |  |  |  | (181 | ) |  |  | 1,929 |
Balance, May 31, 2015 |  | $ | 18,806 |  |  | $ | 51,313 |  |  | $ | 70,119 |
Amortizable of Intangible Assets | Amortizable intangible assets consisted of the following and are included in customer based intangible and other noncurrent assets within the consolidated balance sheets:
(in thousands) |  | Gross Carrying Amount |  |  | Less Accumulated Amortization |  |  | Net Carrying Amount |
Licenses |  | $ | 4,919 |  |  | $ | 1,630 |  |  | $ | 3,289 |
Covenants not to compete |  |  | 428 |  |  |  | 124 |  |  |  | 304 |
Patents |  |  | 7,701 |  |  |  | 3,087 |  |  |  | 4,614 |
Customer relationship intangibles |  |  | 38,616 |  |  |  | 14,446 |  |  |  | 24,170 |
Other product and service related intangibles |  |  | 6,233 |  |  |  | 1,236 |  |  |  | 4,997 |
Balance, May 31, 2015 |  | $ | 57,897 |  |  | $ | 20,523 |  |  | $ | 37,374 |
Licenses |  | $ | 6,701 |  |  | $ | 1,873 |  |  | $ | 4,828 |
Covenants not to compete |  |  | 474 |  |  |  | 256 |  |  |  | 218 |
Patents |  |  | 5,990 |  |  |  | 2,746 |  |  |  | 3,244 |
Customer relationship intangibles |  |  | 37,145 |  |  |  | 11,915 |  |  |  | 25,230 |
Other product and service-related intangibles |  |  | 3,833 |  |  |  | 619 |  |  |  | 3,214 |
Balance, May 31, 2014 |  | $ | 54,143 |  |  | $ | 17,409 |  |  | $ | 36,734 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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