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FAIR VALUE MEASUREMENT (Tables)
 12 Months Ended
Dec. 31, 2023
FAIR VALUE MEASUREMENT [Abstract]  
Fair Value Measurement

All of the Company’s cash is classified within Level 2 because the Company’s cash is valued using pricing sources and models utilizing observable market inputs. The Convertible promissory notes are classified as Level 3 due to significant unobservable inputs.

 
 ​ ​
As of December 31, 2023
(in thousands)
 ​ ​
Quoted prices
in active
markets for
identical assets
(Level 1)
 ​ ​
Significant
other
observable
inputs
(Level 2)
 ​ ​
Significant
unobservable
inputs
(Level 3)
Cash
​ ​
 
 ​ ​
 
 ​ ​
 
Cash
​ ​ ​ ​
2,572.7
 ​ ​
 
 ​ ​
 
 ​ ​
 
 ​ ​
 
Current Liabilities
​ ​
 
 ​ ​
 
 ​ ​
 
Convertible promissory notes
​ ​ ​ ​ ​ ​
42,415.5
Derivative liability
​ ​ ​ ​ ​ ​
17,282.5
 
 ​ ​
 
 ​ ​
 
 ​ ​
 
Liabilities
​ ​
 
 ​ ​
 
 ​ ​
 
Convertible promissory notes
​ ​ ​ ​ ​ ​
2,931.5
Derivative liability
 ​ ​ ​ ​ ​ ​
1,120.3

 
 ​ ​
As of December 31, 2022
(in thousands)
 ​ ​
Quoted prices
in active
markets for
identical assets
(Level 1)
 ​ ​
Significant
other
observable
inputs
(Level 2)
 ​ ​
Significant
unobservable
inputs
(Level 3)
Cash
​ ​
 
 ​ ​
 
 ​ ​
 
Cash
​ ​
​ ​
9,808.4
 ​ ​
 
 ​ ​
 
 ​ ​
 
 ​ ​
 
Liabilities
​ ​
 
 ​ ​
 
 ​ ​
 
Convertible promissory notes
​ ​
​ ​
​ ​
4,123.9
Derivative liability
 ​ ​
​ ​
​ ​
14,905.3