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Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2021
Fair Value Disclosures [Abstract]  
Schedule of assets and liabilities measured at fair value on recurring basis
Assets and liabilities measured at fair value are based the valuation techniques identified in the table below. The valuation techniques are:

(a)Market approach—prices and other relevant information generated by market transactions involving identical or comparable assets.

The following tables present financial assets and liabilities at December 31, 2021 and December 31, 2020 for which the Company measures fair value on a recurring basis, by level, within the fair value hierarchy:
 
December 31, 2021TotalLevel 1Level 2Level 3Valuation
Technique
Assets
Money market mutual funds$13,147 $13,147 $— $— (a)
December 31, 2020TotalLevel 1Level 2Level 3Valuation
Technique
Assets
Money market mutual funds$20,142 $20,142 $— $— (a)
United States treasuries$4,999 $4,999 $— $— (a)