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Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2019
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, 2019 and 2018:
Assets and Liabilities at Fair Value
TotalNAV Practical Expedient (No Fair Value Level)Level 1Level 2Level 3
December 31, 2019
Assets
Money market funds$30,673  $—  $30,673  $—  $—  
Equity securities23,878  15,068  8,810  —  —  
December 31, 2018
Assets
Money market funds$57,790  $—  $57,790  $—  $—  
Equity securities18,109  12,252  5,857  —  —