11. Segment Information

We have determined that we operate in three identifiable industry segments: (a) security and inspection systems (Security division), (b) medical monitoring and diagnostic cardiology systems (Healthcare division) and (c) optoelectronic devices and manufacturing (Optoelectronics and Manufacturing division). We also have a corporate segment (Corporate) that includes executive compensation and certain other general and administrative expenses; expenses related to stock issuances and legal, audit and other professional service fees not allocated to industry segments. Both the Security and Healthcare divisions comprise primarily end-product businesses whereas the Optoelectronics and Manufacturing division primarily supplies components and subsystems to OEM customers, as well as the Security and Healthcare divisions. Sales between divisions are at transfer prices that approximate market values. All other accounting policies of the segments are the same as described in Note 1, Summary of Significant Accounting Policies of the Form 10-K for the fiscal year ended June 30, 2018.

The following tables set forth the results of operations and identifiable assets by industry segment (in thousands):


	Three Months Ended March 31,				Nine Months Ended March 31,
	2018		2019		2018		2019
Revenues (1) — by Segment:
Security division	$	170,270	$	193,486	$	504,784	$	552,130
Healthcare division		43,758		48,865		141,793		138,697
Optoelectronics and Manufacturing division, including intersegment revenues		66,212		70,927		189,024		213,900
Intersegment revenues elimination		(12,941)		(8,994)		(33,641)		(30,989)
Total	$	267,299	$	304,284	$	801,960	$	873,738


	Three Months Ended March 31,				Nine Months Ended March 31,
	2018		2019		2018		2019
Income (loss) from operations — by Segment:
Security division	$	21,028	$	24,943	$	66,192	$	74,056
Healthcare division		(8,425)		5,418		(6,975)		5,752
Optoelectronics and Manufacturing division		6,547		7,320		16,224		22,212
Corporate		(10,730)		(5,354)		(28,601)		(21,265)
Eliminations (2)		(677)		(207)		(1,556)		(671)
Total	$	7,743	$	32,120	$	45,284	$	80,084


	June 30,		March 31,
	2018		2019
Assets — by Segment:
Security division	$	804,527	$	798,215
Healthcare division		167,611		154,212
Optoelectronics and Manufacturing division		220,373		245,176
Corporate		66,453		90,258
Eliminations (2)		(3,273)		(3,746)
Total	$	1,255,691	$	1,284,115

(1)

For the nine months ended March 31, 2018, one customer, Servicio de Administactión Tributaria (“SAT”) in Mexico, accounted for 11% of total net revenues. For the three months ended March 31, 2018 and the three and nine months ended March 31, 2019, no customer accounted for greater than 10% of total net revenues.

(2)

Eliminations within operating income primarily reflect the change in the elimination of intercompany profit in inventory not-yet-realized. Eliminations in assets reflect the amount of intercompany profits in inventory as of the balance sheet date. Such intercompany profit will be realized when inventory is shipped to the external customers of the Security and Healthcare divisions.