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Commitments and Contingencies (Details) - USD ($) | Dec. 31, 2017 | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Commitments and Contingencies |  |  |
Co-investment commitments in partnership |  | $ 94,900,000 |
Consolidated Affiliates |  |  |
Commitments and Contingencies |  |  |
Contingent liability |  | 21,700,000 |
Expected payments of contingent liability |  | 8,900,000 |
Present value of expected payments of contingent liabilities |  | 8,100,000 |
Consolidated Affiliates | Scenario, Forecast |  |  |
Commitments and Contingencies |  |  |
Expected payments of contingent liability | $ 1,600,000 |  |
Equity Method Investee |  |  |
Commitments and Contingencies |  |  |
Contingent liability |  | $ 170,000,000 |
Equity Method Investee | Scenario, Forecast |  |  |
Commitments and Contingencies |  |  |
Expected payments of contingent liability | $ 0 |  |
Third Avenue Focused Credit Fund | Affiliated Entity | Third Avenue |  |  |
Commitments and Contingencies |  |  |
Loss contingency reserve |  |  | $ 15,000,000

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- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
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