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Fair Value Measurements (Tables)
 6 Months Ended
Jun. 30, 2023
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
Assets measured at fair value on a recurring basis as of June 30, 2023 are as follows:
TotalLevel 1Level 2Level 3
Assets
Cash equivalents:
Money market funds$1,148 $1,148 $— $— 
Short-term investments:
Investment in convertible notes receivable2,000 — — 2,000 
Total financial assets$3,148 $1,148 $— $2,000 
Assets measured at fair value on a recurring basis as of December 31, 2022 are as follows:
TotalLevel 1Level 2Level 3
Assets
Cash equivalents:
Money market funds$1,612 $1,612 $— $— 
Total financial assets$1,612 $1,612 $— $— 
Schedule of Warrant Liability Activity
A summary of the warrant liability activity for the six months ended June 30, 2023, is as follows:
Warrants OutstandingFair Value Per ShareFair Value
(in thousands, except per share data)
Balance at December 31, 2022— $— $— 
Option to exercise526 $1.52 $800 
Payment to warrant holder(526)$1.52 $(800)
Balance at June 30, 2023— 0$— — 
Summary of Available for Sale Securities
A summary of the AFS activity for the six months ended June 30, 2023, is as follows:
Fair Value
Balance at December 31, 2022$— 
Investment in convertible notes receivable2,000 
Balance at June 30, 2023$2,000