XML 49 R30.htm IDEA: XBRL DOCUMENT
v3.20.4

Investment Securities (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Gain (Loss) on Securities [Line Items] |  |
Gain (Loss) on Securities [Table Text Block] |  | Artisan’s investments in equity securities consist of investments in shares of Artisan Funds, Artisan Global Funds and Artisan Private Funds. Unrealized gains on investment securities held as of December 31, 2020, 2019 and 2018 were $0.7 million, $5.0 million, and $0.7 million, respectively.
Schedule of available-for-sale securities | The disclosures below include details of Artisan’s investments, excluding money market funds and consolidated investment products. Investments held by consolidated investment products are described in Note 6, “Variable Interest Entities and Consolidated Investment Products”.
| As of December 31, 2020 |  | As of December 31, 2019
Investments in equity securities | $ | 2,807 |  |  | $ | 7,543 |
Investments in equity securities accounted for under the equity method | 849 |  |  | 16,335 |
Total investment securities | $ | 3,656 |  |  | $ | 23,878 |

X
- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of realized and unrealized gain (loss) on investment in security. + References No definition available. + Details
Name: | us-gaap_GainLossOnInvestmentsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration