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Segment Information and Geographic Data (Tables) | 9 Months Ended
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Feb. 29, 2020
Segment Information | Segment information follows:
|  | Food Safety |  |  | Animal Safety |  |  | Corporate and Eliminations (1) |  |  | Total |
|  | (in thousands) |
As of and for the three months ended February 29, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Product revenues to external customers |  | $ | 44,450 |  |  | $ | 33,286 |  |  | $ | — |  |  | $ | 77,736 |
Service revenues to external customers |  |  | 6,048 |  |  |  | 16,085 |  |  |  | — |  |  |  | 22,133 |
Total revenues to external customers |  |  | 50,498 |  |  |  | 49,371 |  |  |  | — |  |  |  | 99,869 |
Operating income (loss) |  |  | 5,881 |  |  |  | 8,492 |  |  |  | (1,330 | ) |  |  | 13,043 |
Total assets |  |  | 226,077 |  |  |  | 219,501 |  |  |  | 327,923 |  |  |  | 773,501 |
As of and for the three months ended February 28, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Product revenues to external customers |  | $ | 44,790 |  |  | $ | 32,585 |  |  | $ | — |  |  | $ | 77,375 |
Service revenues to external customers |  |  | 6,323 |  |  |  | 14,002 |  |  |  | — |  |  |  | 20,325 |
Total revenues to external customers |  |  | 51,113 |  |  |  | 46,587 |  |  |  | — |  |  |  | 97,700 |
Operating income (loss) |  |  | 8,339 |  |  |  | 7,338 |  |  |  | (1,038 | ) |  |  | 14,639 |
Total assets |  |  | 204,570 |  |  |  | 221,335 |  |  |  | 246,680 |  |  |  | 672,585 |
(1) | Includes corporate assets, consisting principally of cash and cash equivalents, marketable securities , current and deferred tax accounts and overhead expenses not allocated to specific business segments. Also includes the elimination of intersegment transactions.
|  | Food Safety |  |  | Animal Safety |  |  | Corporate and Eliminations (1) |  |  | Total |
|  | (in thousands) |
As of and for the nine months ended February 29, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Product revenues to external customers |  | $ | 141,516 |  |  | $ | 105,555 |  |  | $ | — |  |  | $ | 247,071 |
Service revenues to external customers |  |  | 16,858 |  |  |  | 45,167 |  |  |  | — |  |  |  | 62,025 |
Total revenues to external customers |  |  | 158,374 |  |  |  | 150,722 |  |  |  | — |  |  |  | 309,096 |
Operating income (loss) |  |  | 24,571 |  |  |  | 26,521 |  |  |  | (3,513 | ) |  |  | 47,579 |
As of and for the nine months ended February 28, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Product revenues to external customers |  | $ | 139,979 |  |  | $ | 109,918 |  |  | $ | — |  |  | $ | 249,897 |
Service revenues to external customers |  |  | 17,067 |  |  |  | 37,460 |  |  |  | — |  |  |  | 54,527 |
Total revenues to external customers |  |  | 157,046 |  |  |  | 147,378 |  |  |  | — |  |  |  | 304,424 |
Operating income (loss) |  |  | 29,554 |  |  |  | 23,101 |  |  |  | (3,291 | ) |  |  | 49,364 |
(1) | Includes elimination of intersegment transactions.
Disaggregated Revenue | The following table presents the Company’s revenue disaggregated by geographic location:
|  | Three months ended |  |  | Nine months ended |
|  | February 29/28, |  |  | February 29/28, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
|  | (in thousands) |  |  | (in thousands) |
Revenues by Geographic Location |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Domestic |  | $ | 59,762 |  |  | $ | 57,422 |  |  | $ | 186,887 |  |  | $ | 182,298 |
International |  |  | 40,107 |  |  |  | 40,278 |  |  |  | 122,209 |  |  |  | 122,126 |
Total revenue |  |  | 99,869 |  |  |  | 97,700 |  |  |  | 309,096 |  |  |  | 304,424 |

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