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Restructuring Costs | 12 Months Ended
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Oct. 31, 2020
Restructuring and Related Activities [Abstract] |
RESTRUCTURING COSTS | RESTRUCTURING COSTS Ciena has undertaken a number of restructuring activities intended to reduce expense and better 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 Consolidated Balance Sheets, for the fiscal years indicated (in thousands):
| Workforce reduction |  | Consolidation of excess facilities and other restructuring activities |  | Total
Balance at October 28, 2017 | $ | 1,291 |  |  | $ | 1,648 |  |  | $ | 2,939 |
Charges | 14,853 |  | (1) | 3,890 |  | (4) | 18,743 |
Cash payments | (14,036) |  |  | (3,799) |  |  | (17,835) |
Balance at November 3, 2018 | 2,108 |  |  | 1,739 |  |  | 3,847 |
Charges | 13,779 |  | (2) | 10,759 |  | (5) | 24,538 |
Cash payments | (11,904) |  |  | (1,338) |  |  | (13,242) |
Balance at November 2, 2019 | 3,983 |  |  | 11,160 |  |  | 15,143 |
Charges | 7,282 |  | (3) | 15,370 |  | (6) | 22,652 |
Adjustments related to ASC 842 | — |  |  | (11,160) |  | (7) | (11,160) |
Cash payments | (8,350) |  |  | (15,370) |  |  | (23,720) |
Balance at October 31, 2020 | $ | 2,915 |  |  | $ | — |  |  | $ | 2,915 |
Current restructuring liabilities | $ | 2,915 |  |  | $ | — |  |  | $ | 2,915 |
Non-current restructuring liabilities | $ | — |  |  | $ | — |  |  | $ | — |
_________________________________ (1) During fiscal 2018, Ciena recorded a charge of $14.9 million of severance and other employee-related costs associated with a workforce reduction of approximately 240 employees. (2) During fiscal 2019, Ciena recorded a charge of $13.8 million of severance and other employee-related costs associated with a workforce reduction of approximately 283 employees. (3) During fiscal 2020, Ciena recorded a charge of $7.3 million of severance and other employee-related costs associated with a workforce reduction of approximately 149 employees. (4) Reflects unfavorable lease commitments in connection with a portion of facilities located in Petaluma, California and in Gurgaon, India. (5) Reflects unfavorable lease commitments in connection with a portion of facilities located in Alpharetta, Georgia, Spokane, Washington, Durham, North Carolina and Hanover, Maryland. (6) Primarily represents costs and imputed interest expense related to restructured facilities and the redesign of certain business processes. (7) Represents restructuring reserve liability recognized as a reduction to Operating ROU assets, net in relation to adoption of ASC 842. See Notes 1 and 17 for further discussion.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -URI http://asc.fasb.org/topic&trid=2175745 + Details
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