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Fair Value Measurement (Tables)
9 Months Ended
Sep. 30, 2023
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
The following table summarizes the financial instruments measured at fair value on a recurring basis classified in the fair value hierarchy (Level 1, 2 or 3) based on the inputs used for valuation in the accompanying unaudited condensed consolidated balance sheets:

As of September 30, 2023As of December 31, 2022
Fair Value Measurements:Level 1Level 2Level 3Level 1Level 2Level 3
Marketable securities (see Note 4)
Mutual and money market funds$14,288 $— $— $22,518 $— $— 
Government securities - U.S.87,080 — — — — — 
Total assets$101,368 $— $— $22,518 $— $—