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Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 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 December 31, 2020 and 2019:
Assets and Liabilities at Fair Value
TotalNAV Practical Expedient (No Fair Value Level)Level 1Level 2Level 3
December 31, 2020
Assets
Money market funds$25,855 $— $25,855 $— $— 
Equity securities3,656 57 3,599 — — 
December 31, 2019
Assets
Money market funds$30,673 $— $30,673 $— $— 
Equity securities23,878 15,068 8,810 — —