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Acquisitions - Coininvest and European Precious Metal Trading Acquisitions (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Apr. 30, 2019 | Sep. 30, 2021 | Sep. 30, 2019 | Sep. 30, 2020
Business Acquisition [Line Items] |  |  |  |
Acquired finite-lived intangible asset, weighted average useful life |  | 1 year |  |
Net assets acquired based on fair values: |  |  |  |
Goodwill |  | $ 58.1 |  | $ 54.7
Coininvest and EPMT Acquisitions |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Total merger consideration | $ 22.0 |  |  |
Purchase of shareholders equity interest | $ 11.2 |  |  |
Acquired finite-lived intangible asset, weighted average useful life | 5 years |  |  |
Operating revenues post-acquisition results of the acquired business |  |  | $ 0.6 |
Net income (loss) post-acquisition results of the acquired business |  |  | $ (0.3) |
Net assets acquired based on fair values: |  |  |  |
Cash and cash equivalents | $ 2.0 |  |  |
Receivables from clients | 1.2 |  |  |
Receivable from affiliate | 1.1 |  |  |
Income tax receivable | 0.1 |  |  |
Physical commodities inventory | 9.8 |  |  |
Deferred tax assets, net | 0.2 |  |  |
Other assets | 1.2 |  |  |
Total fair value of tangible assets acquired | 15.6 |  |  |
Accounts payable and other accrued liabilities | 0.2 |  |  |
Payable to clients | 0.2 |  |  |
Total fair value of tangible liabilities assumed | 0.4 |  |  |
Fair value of identifiable net assets acquired | 15.2 |  |  |
Purchase price | 22.0 |  |  |
Total fair value of tangible assets acquired | 6.8 |  |  |
Domain names | 2.1 |  |  |
Identifiable intangible assets acquired | 2.5 |  |  |
Total excess purchase price allocated to identifiable intangible assets | 4.6 |  |  |
Goodwill | $ 2.2 |  |  |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details
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