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Notes Receivables - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Interest income recognized | $ 0 | $ 595
Notes Receivable [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Interest income recognized | $ 0 | $ 595
Notes Receivable on Nonaccrual Status | Effective January 1, 2020, notes receivable were placed on non-accrual status. |
Advisor Engine [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Impairment | $ 19,672 |
Advisor Engine [Member] | Unsecured Convertible Note Receivable [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Impairment | 2,126 |
Advisor Engine [Member] | Unsecured Non Convertible Note [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Impairment | $ 17,546 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Nonaccrual Loans Or Guarantees Date Of Nonaccrual Status. + References No definition available. + Details
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- Definition Impairment of AdvisorEngine financial interests + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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