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Fair Value Measurement (Tables)
3 Months Ended
Mar. 31, 2022
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 March 31, 2022As of December 31, 2021
Fair Value Measurements:Level 1Level 2Level 3Level 1Level 2Level 3
Marketable securities (see Note 3)
Mutual and money market funds$42,776 $— $— $78,098 $— $— 
Corporate bonds— 13,912 — — 16,479 — 
Government securities - U.S.— 3,988 — — 9,471 — 
Other fixed-income securities— 1,932 — — 2,465 — 
Total assets$42,776 $19,832 $— $78,098 $28,415 $—