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SIGNIFICANT ASSET IMPAIRMENT AND RESTRUCTURING COSTS | 6 Months Ended
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Apr. 27, 2024
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 six months ended April 27, 2024 (in thousands):
| Workforce reduction |  | Other restructuring activities |  | Total
Balance at October 28, 2023 | $ | 1,913 |  |  | $ | — |  |  | $ | 1,913 |
Charges | 13,984 |  | (1) | 6,642 |  | (2) | 20,626 |
Cash payments | (7,147) |  |  | (6,642) |  |  | (13,789) |
Balance at April 27, 2024 | $ | 8,750 |  |  | $ | — |  |  | $ | 8,750 |
Current restructuring liabilities | $ | 8,750 |  |  | $ | — |  |  | $ | 8,750 |
(1) Reflects a global workforce reduction of approximately 360 employees during the six months ended April 27, 2024 as part of a business optimization strategy to improve gross margin, constrain operating expense and redesign certain business processes. (2) 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 reorganization. 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 six months ended April 29, 2023 (in thousands):
| Workforce reduction |  | Other restructuring activities |  | Total
Balance at October 29, 2022 | $ | 1,215 |  |  | $ | 4,620 |  |  | $ | 5,835 |
Charges | 2,863 |  | (1) | 9,588 |  | (2) | 12,451 |
Cash payments | (1,783) |  |  | (14,208) |  |  | (15,991) |
Balance at April 29, 2023 | $ | 2,295 |  |  | $ | — |  |  | $ | 2,295 |
Current restructuring liabilities | $ | 2,295 |  |  | $ | — |  |  | $ | 2,295 |
(1) Reflects employee costs associated with workforce reductions during the six months ended April 29, 2023 as part of a business optimization strategy to improve gross margin, constrain operating expense, and redesign certain business processes. (2) 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 reorganization.

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- Definition The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482017/420-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482017/420-10-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//420/tableOfContent Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482017/420-10-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(e)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-2 + Details
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