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FAIR VALUE MEASUREMENTS
6 Months Ended
Jun. 30, 2023
Fair Value Disclosures [Abstract]  
FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS
Factors used in determining the fair value of our financial assets and liabilities are summarized into three broad categories:
Level 1 - quoted prices in active markets for identical securities;
Level 2 - other significant observable inputs, including quoted prices for similar securities, interest rates, prepayment spreads, credit risk; and
Level 3 - significant unobservable inputs, including our own assumptions in determining fair value.

We determined the carrying value of Cash, Receivables, Accounts payable and Accrued expenses and other current liabilities approximate their fair values due to the short-term nature of their terms.

There were no changes to our valuation techniques during the quarter ended June 30, 2023.

Asset Impairment
See Note 7 - Asset Impairment for discussion of an asset impairment charge recorded in the quarter ended March 31, 2023. There were no impairment charges for the quarter ended June 30, 2023.

PIPE Warrants
All of our remaining PIPE warrants were exercised or expired in the first quarter of 2023.

Our PIPE warrants were recorded at fair value at the end of each reporting period and transaction date with changes in fair value recorded on our Condensed Consolidated Statements of Operations.

The public PIPE warrants traded in active markets with sufficient trading volume to qualify as Level 1 financial instruments as they had observable market prices which were used to estimate the fair value.

The private placement PIPE warrants were not traded in active markets, or were traded with insufficient volume and therefore represented Level 3 financial instruments that are valued using a Black-Scholes option-pricing model.

The fair value of the PIPE warrant liability was as follows:

December 31, 2022
Carrying
Amount
Level 1Level 2Level 3
PIPE Warrants$742 $742 $— $— 
Private Warrants164 — — 164 
Total$906 $742 $— $164 

Level 3 Disclosures
Changes in the Level 3 PIPE warrant liability were as follows:
Six months ended June 30, 2023
Balance at December 31, 2022$164 
Measurement adjustment(164)
Balance at June 30, 2023$