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DEBT (Tables)
9 Months Ended
Sep. 30, 2022
Debt Disclosure [Abstract]  
Schedule of Long-term Debt The components of the long-term debt balance are as follows:

 

 

 

September 30,

2022

 

 

December 31,

2021

 

Notes payable, gross

 

$

5,556

 

 

$

8,055

 

Less: Unamortized debt discount and

   issuance costs

 

 

(46

)

 

 

(93

)

Accretion of final payment fee

 

 

422

 

 

 

339

 

Carrying value of notes payable

 

 

5,932

 

 

 

8,301

 

Less: Current portion of long-term debt

 

 

(3,306

)

 

 

(3,295

)

Long-term debt, net of issuance costs and

   discount

 

$

2,626

 

 

$

5,006

 

 

Schedule of Estimated Future Principal Payments

As of September 30, 2022, the estimated future principal payments due were as follows:

 

 

 

As of September 30, 2022

 

2022

 

$

833

 

2023

 

 

3,333

 

2024

 

 

1,389

 

Thereafter

 

 

 

Total principal payments

 

$

5,555