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Fair Value Measurements
9 Months Ended
Sep. 30, 2023
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value MeasurementsThe Company classifies its held-to-maturity investments, which are comprised of investment grade commercial paper, within Level 2 of the fair value hierarchy because the fair value of these securities are priced by using inputs based on non-binding market consensus that are primarily corroborated by observable market data or quoted market prices for similar
instruments. The Company’s cash equivalents on its condensed consolidated balance sheet included commercial paper with an amortized cost and estimated fair value of $3.0 million as of September 30, 2023.
There were no transfers between levels of the fair value hierarchy for the three and nine months ended September 30, 2023 and the year ended December 31, 2022, respectively. The Company held no assets or liabilities that were measured at fair value on a recurring basis as of September 30, 2023 and December 31, 2022, respectively.
As of December 31, 2022, the Company had $169 thousand in restricted cash related to the letter of credit established according to requirements under a lease agreement, reported as a component of other current assets on the condensed consolidated balance sheets. As of September 30, 2023, this balance is no longer restricted as the lease agreement and associated letter of credit have been completed.

Additionally, the Company had $6.1 million and $4.3 million in restricted cash as of September 30, 2023 and December 31, 2022, respectively, related to the line of credit agreement with City National Bank. See Note 11 for further details.