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Restructuring and Related Activities (Tables)
 12 Months Ended
Dec. 31, 2021
Restructuring And Related Activities [Abstract]  
Summary of Activity Related To The Restructuring Liabilities

 

The activity related to the restructuring liabilities for the year ended December 31, 2021, is as follows (in thousands).

 

 

 

Lease - related
exit costs

 

 

Employee
termination

 

 

Total

 

Balance as of December 31, 2020

 

$

2,584

 

 

$

12

 

 

$

2,596

 

Accretion

 

 

145

 

 

 

—

 

 

 

145

 

Provision

 

 

28

 

 

 

—

 

 

 

28

 

Cash payments

 

 

(987

)

 

 

(12

)

 

 

(999

)

Lease assignment to NeuBase

 

 

(136

)

 

 

—

 

 

 

(136

)

Balance as of December 31, 2021

 

$

1,634

 

 

$

—

 

 

$

1,634