GEOGRAPHIC AND SEGMENT INFORMATION | GEOGRAPHIC AND SEGMENT INFORMATION 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 June 30, 2020 (In thousands) Advanced Energy OEM Corporate & Other Total Sales $ 2,867 $ 1,429 $ — $ 4,296 Income (loss) from operations (3,292 ) 584 (3,459 ) (6,167 ) Interest income — — 7 7 Interest expense — — (8 ) (8 ) Other losses, net — — (14 ) (14 ) Income tax benefit — — (1,492 ) (1,492 ) Three Months Ended June 30, 2019 (In thousands) Advanced Energy OEM Corporate & Other Total Sales $ 5,350 $ 1,299 $ — $ 6,649 Income (loss) from operations (968 ) 136 (3,590 ) (4,422 ) Interest income — — 403 403 Other losses, net — — (200 ) (200 ) Income tax expense — — 76 76 Six Months Ended June 30, 2020 (In thousands) Advanced Energy OEM Corporate & Other Total Sales $ 6,853 $ 2,440 $ — $ 9,293 Income (loss) from operations (7,276 ) 831 (7,214 ) (13,659 ) Interest income — — 223 223 Interest expense — — (14 ) (14 ) Other income, net — — 412 412 Income tax benefit — — (6,397 ) (6,397 ) Six Months Ended June 30, 2019 (In thousands) Advanced Energy OEM Corporate & Other Total Sales $ 9,721 $ 2,557 $ — $ 12,278 Income (loss) from operations (4,296 ) 727 (6,583 ) (10,152 ) Interest income — — 826 826 Other losses, net — — (495 ) (495 ) Income tax expense — — 82 82 International sales represented approximately 21.0% and 24.6% of total revenues for the three and six months ended June 30, 2020, respectively, as compared with 31.7% and 31.2% 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 Six Months Ended (In thousands) 2020 2019 2020 2019 Sales by Domestic and International Domestic $ 3,393 $ 4,540 $ 7,011 $ 8,450 International 903 2,109 2,282 3,828 Total $ 4,296 $ 6,649 $ 9,293 $ 12,278 |