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FAIR VALUE MEASUREMENTS
3 Months Ended
Mar. 31, 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 March 31, 2023.

Asset Impairment
See Note 7 for discussion of an asset impairment charge recorded in the quarter ended March 31, 2023.

PIPE Warrants
Our PIPE warrants were all exercised or expired in March 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:

Three months ended March 31, 2023Year ended December 31, 2022
Balance at December 31, 2022$164 $1,690 
Measurement adjustment(164)(1,526)
Balance at March 31, 2023$$164