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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Amortization Expense | Amortization expense associated with our intangible assets, which has been reflected as a separate operating expense caption within the accompanying condensed consolidated statements of income and comprehensive income, consisted of the following:
| Quarter Ended December 31,
| 2017 |  | 2016
| (In thousands)
Cost of revenues | $ | 706 |  |  | $ | 1,686 |
Selling, general and administrative expenses | 1,082 |  |  | 1,634 |
| $ | 1,788 |  |  | $ | 3,320 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | Estimated future intangible asset amortization expense associated with intangible assets existing at December 31, 2017 was as follows (in thousands):
Year Ended September 30, |
2018 (excluding the quarter ended December 31, 2017) | $ | 4,803 |
2019 | 6,085 |
2020 | 3,689 |
2021 | 2,433 |
2022 | 2,287 |
Thereafter | 217 |
| $ | 19,514 |
Schedule of Goodwill | The following table summarizes changes to goodwill during the quarter ended December 31, 2017, both in total and as allocated to our segments:
| Applications |  | Scores |  | Decision Management Software |  | Total
| (In thousands)
Balance at September 30, 2017 | $ | 588,288 |  |  | $ | 146,648 |  |  | $ | 69,478 |  |  | $ | 804,414 |
Foreign currency translation adjustment | 1,777 |  |  | — |  |  | 141 |  |  | 1,918 |
Balance at December 31, 2017 | $ | 590,065 |  |  | $ | 146,648 |  |  | $ | 69,619 |  |  | $ | 806,332 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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