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Long-term Debt (Tables)
12 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments Long-term debt consisted of the following (in thousands):

 

 

December 31,

 

 

 

2021

 

 

2020

 

Principal amount of long-term debt

 

$

35,000

 

 

$

35,000

 

Less: Current portion of long-term debt

 

 

 

 

 

 

Long-term debt, net of current portion

 

 

35,000

 

 

 

35,000

 

Debt discount, net of accretion

 

 

(511

)

 

 

(834

)

Accrued end-of-term payments

 

 

708

 

 

 

491

 

Long-term debt, net of discount and current portion

 

$

35,197

 

 

$

34,657