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Short-Term and Long-Term Debt (Tables)
 6 Months Ended
May 02, 2020
Debt Disclosure [Abstract]  
Schedule of Carrying Values and Estimated Fair Values of Convertible Notes
The net carrying values of Ciena’s term loans were comprised of the following for the fiscal periods indicated (in thousands):
 
 
May 2, 2020
 
November 2, 2019
 
 
Principal Balance
 
Unamortized Discount
 
Deferred Debt Issuance Costs
 
Net Carrying Value
 
Net Carrying Value
New 2025 Term Loan
 
$
691,268

 
$
(1,742
)
 
$
(3,240
)
 
$
686,286

 
$
—

Old 2025 Term Loan
 
$
—

 
$
—

 
$
—

 
$
—

 
$
687,406