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INTEREST EXPENSE AND OTHER
12 Months Ended
Dec. 31, 2023
Other Income and Expenses [Abstract]  
INTEREST EXPENSE AND OTHER INTEREST EXPENSE AND OTHER
Interest expense and other for the years ended December 31, 2023 and 2022 consisted of the following (in thousands):

Twelve months ended December 31,
20232022
Amortization of premiums (accretion of discounts) on marketable securities, net$(474)$778 
Convertible note issuance costs— 474 
Loss on disposal of assets111 — 
Realized loss on instrument-specific credit risk46 — 
Expected credit losses35 — 
Realized losses on redemptions of marketable securities— 77 
Common Stock Purchase Agreement costs— 29 
Other34 21 
Interest expense and other$(248)$1,379