4. SEGMENT INFORMATION

The Company has two reportable segments: Food Safety and Animal Safety. The Food Safety segment is primarily engaged in the development, production and marketing of diagnostic test kits, culture media and related products used by food producers and processors to detect harmful natural toxins, foodborne bacteria, allergens and levels of general sanitation. The Animal Safety segment is primarily engaged in the development, production and marketing of products dedicated to animal safety, including a complete line of consumable products marketed to veterinarians and animal health product distributors; this segment also provides genomic identification and related interpretive bioinformatic services. Additionally, the Animal Safety segment produces and markets rodenticides, cleaners, disinfectants and insecticides to assist in the control of rodents, insects and disease in and around agricultural, food production and other facilities.

Neogen’s international operations in the United Kingdom, Mexico, Brazil, China, and India originally focused on the Company’s Food Safety products, and each of these units reports through the Food Safety segment. In recent years, these operations have expanded to offer the Company’s complete line of products and services, including those usually associated with the Animal Safety segment such as cleaners, disinfectants, rodenticides, insecticides, veterinary instruments and genomic services. These additional products and services are managed and directed by existing management, and are reported through the Food Safety segment.

The accounting policies of each of the segments are the same as those described in Note 1.

Segment information follows:


	Food Safety		Animal Safety		Corporate and Eliminations (1)			Total
	(in thousands)
As of and for the three months ended February 28, 2018
Product revenues to external customers	$	42,618	$	35,524	$	—		$	78,142
Service revenues to external customers		5,027		12,723		—			17,750

Total revenues to external customers		47,645		48,247		—			95,892
Operating income (loss)		8,258		8,493		(838	)		15,913
Total assets		188,075		215,371		192,155			595,601

As of and for the three months ended February 28, 2017
Product revenues to external customers	$	39,318	$	34,646	$	—		$	73,964
Service revenues to external customers		3,631		10,790		—			14,421

Total revenues to external customers		42,949		45,436		—			88,385
Operating income (loss)		7,403		7,743		(795	)		14,351
Total assets		183,419		215,243		108,636			507,298


	Food Safety		Animal Safety		Corporate and Eliminations (1)			Total
	(in thousands)
For the nine months ended February 28, 2018
Product revenues to external customers	$	129,621	$	114,677	$	—		$	244,298
Service revenues to external customers		14,319		34,348		—			48,667

Total revenues to external customers		143,940		149,025		—			292,965
Operating income (loss)		25,704		27,691		(3,060	)		50,335

For the nine months ended February 28, 2017
Product revenues to external customers	$	112,592	$	110,578	$	—		$	223,170
Service revenues to external customers		10,475		29,102		—			39,577

Total revenues to external customers		123,067		139,680		—			262,747
Operating income (loss)		24,286		24,616		(2,957	)		45,945

(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.