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Restructuring (Tables)
 9 Months Ended
Sep. 30, 2021
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring Reserve by Type of Cost
The following is a reconciliation of the beginning and ending balances of our restructuring liability as it relates to the restructuring plans (in thousands):
20212020
Balance at December 31, 2020 and 2019$11 $38 
Accretion of lease obligations— 2 
Payments(11)(22)
Balance at September 30, 2021 and 2020$— $18 
The following is a reconciliation of the ending balance of our restructuring liability at September 30, 2021 to the balance sheet:
20212020
Balance at September 30, 2021 and 2020$— $18 
Less, short-term restructuring liability— 18 
Long-term restructuring liability, included in other liabilities$— $—