Segment Information and Geographical Data (Tables)

3 Months Ended

Aug. 31, 2018

Segment information follows:


	Food Safety		Animal Safety		Corporate and Eliminations (1)			Total
	(in thousands)
As of and for the three months ended August 31, 2018
Product revenues to external customers	$	46,933	$	36,027	$	—		$	82,960
Service revenues to external customers		5,250		11,416		—			16,666

Total revenues to external customers		52,183		47,443		—			99,626
Operating income (loss)		10,873		6,706		(1,100	)		16,479
Total assets		201,727		212,786		226,413			640,926
As of and for the three months ended August 31, 2017 - Revised(2)
Product revenues to external customers	$	41,839	$	37,706	$	—		$	79,545
Service revenues to external customers		4,452		10,212		—			14,664

Total revenues to external customers		46,291		47,918		—			94,209
Operating income (loss)		8,777		8,669		(1,022	)		16,424
Total assets		194,857		209,404		143,073			547,334

(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.

(2)

Segment revenues for the three months ended August 31, 2017 have been revised as discussed in Note 1. For the three month period ended August 31, 2017, product revenues were reduced by $443,000 in the Food Safety segment and $579,000 in the Animal Safety segment; service revenues were unchanged in the Food Safety Segment and were reduced by $25,000 in the Animal Safety segment.