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Variable Interest Entities and Consolidated Investment Products (Details) - USD ($) $ in Thousands | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2019 | Jan. 01, 2019 | Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Deconsolidation, Gain (Loss), Amount | $ 0 |  |
Net CIP assets included in the table above | 90,641 |  | $ 62,409
Net CIP assets/(liabilities) not included in the table above | (20,096) |  | 2,156
Total Net CIP assets | 70,545 |  | 64,565
Less: redeemable noncontrolling interest | 39,033 |  | 34,349
Artisan’s direct equity investment in CIPs | 31,512 |  | 30,216
Fair Value, Measurements, Recurring |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Money market funds | 2,844 |  | 13,141
Equity securities - long position | 7,281 |  | 7,817
Fixed income instruments - long position | 85,883 |  | 57,621
Derivative assets | 129 |  | 735
Fixed income instruments - short position | 5,476 |  | 16,567
Derivative liabilities | 20 |  | 338
Level 1 | Fair Value, Measurements, Recurring |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Money market funds | 2,844 |  | 13,141
Equity securities - long position | 7,281 |  | 7,196
Fixed income instruments - long position | 0 |  | 0
Derivative assets | 35 |  | 0
Fixed income instruments - short position | 0 |  | 0
Derivative liabilities | 0 |  | 0
Level 2 | Fair Value, Measurements, Recurring |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Money market funds | 0 |  | 0
Equity securities - long position | 0 |  | 0
Fixed income instruments - long position | 85,883 |  | 57,621
Derivative assets | 94 |  | 735
Fixed income instruments - short position | 5,476 |  | 16,567
Derivative liabilities | 20 |  | 338
Level 3 | Fair Value, Measurements, Recurring |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Money market funds | 0 |  | 0
Equity securities - long position | 0 |  | 621
Fixed income instruments - long position | 0 |  | 0
Derivative assets | 0 |  | 0
Fixed income instruments - short position | 0 |  | 0
Derivative liabilities | $ 0 |  | $ 0
Variable Interest Entity, Not Primary Beneficiary |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Amounts reclassified to investment securities upon deconsolidation |  | $ 900 |

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