Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Accounting Policies [Abstract]    
Restricted cash (included in other assets) $ 25 $ 0
Construction in progress $ 144  
Exercisable penny options (in shares) 176,105