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Goodwill and Intangible Assets - Changes in Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Goodwill [Roll Forward] |  |  |
Goodwill, beginning | $ 83,954 | $ 58,517 |
Goodwill attributable to acquisitions | 84,330 | 25,437 |
Goodwill, ending | 168,284 | 83,954 |
Merchant Services |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning | 69,666 | 49,173 |
Goodwill attributable to acquisitions | 38,806 | 20,493 |
Goodwill, ending | 108,472 | 69,666 |
Accumulated impairment losses |  |  | $ 11,458
Proprietary Software and Payments |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning | 14,288 | 9,344 |
Goodwill attributable to acquisitions | 45,524 | 4,944 |
Goodwill, ending | 59,812 | 14,288 |
Accumulated impairment losses |  |  | 0
Other |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning | 0 | 0 |
Goodwill attributable to acquisitions | 0 | 0 |
Goodwill, ending | $ 0 | $ 0 |
Accumulated impairment losses |  |  | $ 0

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- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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