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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2020
Fair Value Disclosures [Abstract]  
Fair value hierarchy of assets and liabilities
The following provides the hierarchy of inputs used to derive fair value of Artisan’s assets and liabilities that are financial instruments as of September 30, 2020 and December 31, 2019:
Assets and Liabilities at Fair Value
TotalNAV Practical Expedient (No Fair Value Level)Level 1Level 2Level 3
September 30, 2020
Assets
Money market funds$70,854 $— $70,854 $— $— 
Equity securities6,737 50 6,687 — — 
December 31, 2019
Assets
Money market funds$30,673 $— $30,673 $— $— 
Equity securities23,878 15,068 8,810 — —