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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2021
Fair Value Disclosures [Abstract]  
Schedule of Fair Value Measurements
The following table presents information about the Company’s financial assets and liabilities that are measured at fair value and indicates the fair value hierarchy of the valuation inputs used as of December 31, 2020:
As of December 31, 2020
(in thousands)Level 1Level 2Level 3Total
Assets
Restricted cash
Certificates of deposit$— $102 $— $102 
Total assets$— $102 $— $102