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Debt (Tables)
12 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Balance The components of the long-term debt balance are as follows:

 

 

December 31,
2021

 

 

December 31,
2020

 

Principal loan balance

 

$

10,000

 

 

$

 

Unamortized debt discount and issuance costs

 

 

(431

)

 

 

 

Cumulative accretion of final fee

 

 

53

 

 

 

 

Long-term debt, net

 

$

9,622

 

 

$

 

Schedule of Estimated Future Principal Payments

As of December 31, 2021, the estimated future principal payments due were as follows:

Years Ending December 31,

 

 

 

2022

 

$

 

2023

 

 

 

2024

 

 

 

2025

 

 

5,217

 

2026

 

 

4,783

 

Total

 

$

10,000