17. Operating segments The Company discloses segment information as reflected in the management information systems reports that its chief operating decision maker uses in making decisions and to report certain entity-wide disclosures about products and services, major customers, and the countries in which the entity holds material assets or reports material revenues. A description of the Company's operating segments is contained in Note 22 to the Company's audited consolidated financial statements included in its Annual Report on Form 10-K for the year ended June 30, 2018. The reconciliation of the reportable segment's revenue to revenue from external customers for the three months ended December 31, 2018 and 2017, is as follows: Revenue From Reportable Inter - external Segment segment customers South African transaction processing $ 21,970 $ 1,167 $ 20,803 International transaction processing 38,124 - 38,124 Financial inclusion and applied technologies 38,755 532 38,223 Total for the three months ended December 31, 2018 $ 98,849 $ 1,699 $ 97,150 South African transaction processing $ 64,148 $ 6,181 $ 57,967 International transaction processing 44,185 - 44,185 Financial inclusion and applied technologies 54,131 7,867 46,264 Total for the three months ended December 31, 2017 $ 162,464 $ 14,048 $ 148,416 The reconciliation of the reportable segment's revenue to revenue from external customers for the six months ended December 31, 2018 and 2017, is as follows: Revenue From Reportable Inter - external Segment segment customers South African transaction processing $ 59,719 $ 4,453 $ 55,266 International transaction processing 77,511 - 77,511 Financial inclusion and applied technologies 91,961 1,704 90,257 Total for the six months ended December 31, 2018 $ 229,191 $ 6,157 $ 223,034 South African transaction processing $ 130,585 $ 12,326 $ 118,259 International transaction processing 90,207 - 90,207 Financial inclusion and applied technologies 108,444 15,936 92,508 Total for the six months ended December 31, 2017 $ 329,236 $ 28,262 $ 300,974 The Company does not allocate interest income, interest expense or income tax expense to its reportable segments. The Company evaluates segment performance based on segment operating income before acquisition-related intangible asset amortization which represents operating income before acquisition-related intangible asset amortization and allocation of expenses allocated to Corporate/Eliminations, all under GAAP. The reconciliation of the reportable segments measures of profit or loss to income before income taxes for the three and six months ended December 31, 2018 and 2017, is as follows: Three months ended Six months ended December 31, December 31, 2018 2017 2018 2017 Reportable segments measure of profit or loss ($ 34,411 ) $ 21,216 ($ 23,860 ) $ 52,784 Operating income: Corporate/Eliminations (8,664 ) (4,909 ) (18,319 ) (11,471 ) Change in value of equity securities (15,836 ) - (15,836 ) - Interest income, net of impairment (331 ) 4,705 1,545 9,749 Interest expense (2,778 ) (2,325 ) (5,537 ) (4,446 ) (Loss) Income before income taxes ($ 62,020 ) $ 18,687 ($ 62,007 ) $ 46,616 The following tables summarize segment information that is prepared in accordance with GAAP for the three and six months ended December 31, 2018 and 2017: Three months ended Six months ended December 31, December 31, 2018 2017 2018 2017 Revenues South African transaction processing $ 21,970 $ 64,148 $ 59,719 130,585 International transaction processing 38,124 44,185 77,511 90,207 Financial inclusion and applied technologies 38,755 54,131 91,961 108,444 Total 98,849 162,464 229,191 329,236 Operating income (loss) South African transaction processing (11,830 ) 13,470 (15,343 ) 25,802 International transaction processing (4,043) (4,991 ) (1,281) 325 Financial inclusion and applied technologies (18,538 ) 12,737 (7,236 ) 26,657 Subtotal: Operating segments (34,411 ) 21,216 (23,860 ) 52,784 Corporate/Eliminations (8,664 ) (4,909 ) (18,319 ) (11,471 ) Total $ (43,075 ) $ 16,307 $ (42,179 ) $ 41,313 Depreciation and amortization South African transaction processing $ 921 $ 1,087 $ 1,862 $ 2,240 International transaction processing 2,511 4,381 5,570 9,013 Financial inclusion and applied technologies 405 309 1,041 664 Subtotal: Operating segments 3,837 5,777 8,473 11,917 Corporate/Eliminations 6,016 2,946 12,174 5,772 Total 9,853 8,723 20,647 17,689 Expenditures for long-lived assets South African transaction processing 1,047 900 2,333 1,377 International transaction processing 841 892 1,641 1,798 Financial inclusion and applied technologies 659 311 1,691 401 Subtotal: Operating segments 2,547 2,103 5,665 3,576 Corporate/Eliminations - - - - Total $ 2,547 $ 2,103 $ 5,665 $ 3,576 The segment information as reviewed by the chief operating decision maker does not include a measure of segment assets per segment as all of the significant assets are used in the operations of all, rather than any one, of the segments. The Company does not have dedicated assets assigned to a particular operating segment. Accordingly, it is not meaningful to attempt an arbitrary allocation and segment asset allocation is therefore not presented. It is impractical to disclose revenues from external customers for each product and service or each group of similar products and services.