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RESTRUCTURING COSTS
 3 Months Ended
Jan. 29, 2022
Restructuring and Related Activities [Abstract]  
RESTRUCTURING COSTS RESTRUCTURING COSTS
Ciena has undertaken a number of restructuring activities intended to reduce expense and to align its workforce and costs with market opportunities, product development and business strategies. The following table sets forth the restructuring activity and balance of the restructuring liability accounts, which are included in accrued liabilities and other short-term obligations on Ciena’s Condensed Consolidated Balance Sheets, for the three months ended January 29, 2022 (in thousands):
Workforce
reduction		Other restructuring activitiesTotal
Balance at October 30, 2021$781 $— $781 
Charges410 
(1)
2,999 
(2)
3,409 
Cash payments(421)(2,999)(3,420)
Balance at January 29, 2022$770 $— $770 
Current restructuring liabilities$770 $— $770 

(1) Reflects employee costs associated with workforce reductions during the three months ended January 29, 2022 as part of a business optimization strategy to improve gross margin, constrain operating expense and redesign certain business processes.
(2) Primarily represents the redesign of certain business processes associated with Ciena’s supply chain and distribution structure reorganization, and costs related to restructured real estate facilities.

The following table sets forth the restructuring activity and balance of the restructuring liability accounts, which are included in accrued liabilities and other short-term obligations on Ciena’s Condensed Consolidated Balance Sheets for the three months ended January 30, 2021 (in thousands):
Workforce
reduction		Other restructuring activitiesTotal
Balance at October 31, 20202,915 $— $2,915 
Charges1,990 
(1)
3,877 
(2)
5,867 
Cash payments(2,994)(3,877)(6,871)
Balance at January 30, 2021$1,911 $— $1,911 
Current restructuring liabilities$1,911 $— $1,911 
(1) Reflects employee costs associated with workforce reductions during the three months ended January 30, 2021 as part of a business optimization strategy to improve gross margin, constrain operating expense and redesign certain business processes.
(2) Primarily represents variable costs and imputed interest expense related to restructured real estate facilities and the redesign of certain business processes.