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RESTRUCTURING COSTS | 9 Months Ended
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Jul. 31, 2021
Restructuring and Related Activities [Abstract] |
RESTRUCTURING COSTS | RESTRUCTURING COSTS Ciena has undertaken a number of restructuring activities intended to reduce expense and to ensure better alignment of 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 nine months ended July 31, 2021 (in thousands):
| Workforce reduction |  | Other restructuring activities |  | Total
Balance at October 31, 2020 | $ | 2,915 |  |  | $ | — |  |  | $ | 2,915 |
Charges | 5,306 |  | (1) | 18,558 |  | (2) | 23,864 |
Cash payments | (7,051) |  |  | (18,558) |  |  | (25,609) |
Balance at July 31, 2021 | $ | 1,170 |  |  | $ | — |  |  | $ | 1,170 |
Current restructuring liabilities | $ | 1,170 |  |  | $ | — |  |  | $ | 1,170 |
(1) Reflects a global workforce reduction of 120 employees during the nine months ended July 31, 2021 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 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 nine months ended August 1, 2020 (in thousands):
| Workforce reduction |  | Other restructuring activities |  | Total
Balance at November 2, 2019 | $ | 3,983 |  |  | $ | 11,160 |  |  | $ | 15,143 |
Charges | 5,015 |  | (1) | 9,783 |  | (2) | 14,798 |
Adjustments related to ASC 842 | — |  |  | (11,160) |  | (3) | (11,160) |
Cash payments | (7,335) |  |  | (9,783) |  |  | (17,118) |
Balance at August 1, 2020 | $ | 1,663 |  |  | $ | — |  |  | $ | 1,663 |
Current restructuring liabilities | $ | 1,663 |  |  | $ | — |  |  | $ | 1,663 |
(1) Reflects a global workforce reduction of approximately 79 employees during the nine months ended August 1, 2020 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 facilities. (3) Represents restructuring reserve liability recognized as a reduction to Operating right-of-use (“ROU”) assets, net in relation to adoption of ASC 842.

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(e)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -URI http://asc.fasb.org/topic&trid=2175745 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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