Segment Information and Geographical Data (Tables)

6 Months Ended

Nov. 30, 2018

Segment information follows:


	Food Safety		Animal Safety		Corporate and Eliminations (1)			Total
	(in thousands)
As of and for the three months ended November 30, 2018
Product revenues to external customers	$	48,256	$	41,306	$	—		$	89,562
Service revenues to external customers		5,494		12,042		—			17,536

Total revenues to external customers		53,750		53,348		—			107,098
Operating income (loss)		10,342		9,057		(1,153	)		18,246
Total assets		201,291		218,231		240,970			660,492

As of and for the three months ended November 30, 2017—Revised (2)
Product revenues to external customers	$	44,367	$	40,104	$	—		$	84,471
Service revenues to external customers		4,839		11,388		—			16,227

Total revenues to external customers		49,206		51,492		—			100,698
Operating income (loss)		8,668		10,529		(1,199	)		17,998
Total assets		175,836		215,099		190,093			581,028

(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 November 30, 2017 have been revised as discussed in Note 1. For the three months ended November 30, 2017, product revenues were reduced by $354,000 in the Food Safety segment and $765,000 in the Animal Safety segment; service revenues were unchanged in the Food Safety segment and in the Animal Safety segment.


	Food Safety		Animal Safety		Corporate and Eliminations (1)			Total
	(in thousands)
For the six months ended November 30, 2018
Product revenues to external customers	$	95,189	$	77,333	$	—		$	172,522
Service revenues to external customers		10,744		23,458		—			34,202

Total revenues to external customers		105,933		100,791		—			206,724
Operating income (loss)		21,215		15,763		(2,253	)		34,725
For the six months ended November 30, 2017—Revised (2)
Product revenues to external customers	$	86,206	$	77,810	$	—		$	164,016
Service revenues to external customers		9,291		21,600		—			30,891

Total revenues to external customers		95,497		99,410		—			194,907
Operating income (loss)		17,446		19,198		(2,222	)		34,422

(1)	Includes the elimination of intersegment transactions.

(2)

Segment revenues for the six months ended November 30, 2017 have been revised as discussed in Note 1. For the six months ended November 30, 2017, product revenues were reduced by $798,000 in the Food Safety segment and $1,343,000 in the Animal Safety segment; service revenues were unchanged in the Food Safety segment and reduced by $25,000 in the Animal Safety segment.