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Acquisitions Fillmore Advisors, LLC Acquisition (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 01, 2019 | Apr. 01, 2019
Coininvest and EPMT Acquisitions [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents |  |  | $ 2.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets |  |  | 1.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets |  |  | 15.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable |  |  | 0.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities |  |  | 0.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net |  |  | 15.2
Business Combination, Consideration Transferred | $ 22.0 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  | 2.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  | $ 4.6
Fillmore Advisors, LLC [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents |  | $ 0.2 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets |  | 0.4 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets |  | 1.1 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable |  | 0.5 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities |  | 0.5 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net |  | 0.6 |
Goodwill, Acquired During Period | 1.9 |  |
Business Combination, Consideration Transferred | 3.2 |  |
Payments to Acquire Businesses, Gross | $ 1.4 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  | 0.7 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  | 0.7 |
Business Combination, Contingent Consideration, Liability |  | 1.8 |
Cash [Member] | Fillmore Advisors, LLC [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Business Combination, Contingent Consideration, Liability |  | $ 1.8 |

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