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SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS
 3 Months Ended
Feb. 01, 2025
Restructuring and Related Activities [Abstract]  
SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS SIGNIFICANT ASSET IMPAIRMENT AND 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 the Condensed Consolidated Balance Sheets, for the three months ended February 1, 2025 (in thousands):
Workforce
reduction		Other restructuring activitiesTotal
Balance at November 2, 2024$1,927 $— $1,927 
Charges278 

1,266 
(1)
1,544 
Cash payments(1,762)(1,266)(3,028)
Balance at February 1, 2025$443 $— $443 
Current restructuring liabilities$443 $— $443 

(1) Primarily represents 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 the Condensed Consolidated Balance Sheets for the three months ended January 27, 2024 (in thousands):
Workforce
reduction		Other restructuring activitiesTotal
Balance at October 28, 2023$1,913 $— $1,913 
Charges2,861 

2,110 
(1)
4,971 
Cash payments(4,058)(2,110)(6,168)
Balance at January 27, 2024$716 $— $716 
Current restructuring liabilities$716 $— $716 

(1) Primarily represents costs related to restructured real estate facilities and the redesign of certain business processes associated with Ciena’s supply chain and distribution structure.