GEOGRAPHIC AND SEGMENT INFORMATION

3 Months Ended

Mar. 31, 2020

Operating segments are aggregated into reportable segments only if they exhibit similar economic characteristics. In addition to similar economic characteristics, we also consider the following factors in determining the reportable segments: the nature of business activities, the management structure directly accountable to our chief operating decision maker for operating and administrative activities, availability of discrete financial information and information presented to the Board of Directors and investors. Asset information is not reviewed by the chief operating decision maker by segment and is not available by segment, accordingly, we have not presented a measure of assets by segment.

Our reportable segments are disclosed as principally organized and managed as two operating segments: Advanced Energy and OEM. "Corporate & Other" includes certain unallocated corporate and administrative costs which were not specifically attributed to any reportable segment. The OEM segment is primarily development and manufacturing contract and product driven, all related expenses are recorded as cost of sales, therefore no segment specific operating expenses are incurred.

Summarized financial information with respect to reportable segments is as follows:



	Three Months Ended March 31, 2020
(In thousands)	Advanced Energy			OEM		Corporate & Other			Total
Sales	$	3,986		$	1,011	$	—		$	4,997

Income (loss) from operations	(3,984		)	247		(3,755		)	(7,492		)

Interest income	—			—		216			216
Interest expense	—			—		(6		)	(6		)
Other income, net	—			—		426			426
Income tax benefit	—			—		(4,905		)	(4,905		)



	Three Months Ended March 31, 2019
(In thousands)	Advanced Energy			OEM		Corporate & Other			Total
Sales	$	4,371		$	1,258	$	—		$	5,629

Income (loss) from operations	(3,328		)	591		(2,993		)	(5,730		)

Interest income	—			—		423			423
Other losses	—			—		(295		)	(295		)
Income tax expense	—			—		6			6

International sales represented approximately 27.6% of total revenues for the three months ended March 31, 2020, as compared with 30.5% of total revenues for the same prior year period.

Substantially all of these sales are denominated in U.S. dollars. Revenue by geographic region, based on the customer's “ship to” location on the invoice, are as follows:



	Three Months Ended March 31,
(In thousands)	2020		2019
Sales by Domestic and International
Domestic	$	3,618	$	3,910
International	1,379		1,719
Total	$	4,997	$	5,629