Short-Term and Long-Term Debt (Tables)

12 Months Ended

Oct. 31, 2018

Debt Disclosure [Abstract]

Schedule of carrying values and estimated fair values of debt instruments

The net carrying values of Ciena’s convertible notes payable was comprised of the following for the fiscal periods indicated (in thousands):

	October 31, 2018		October 31, 2017
3.75% Convertible Senior Notes due October 15, 2018 (Original)	$	—	$	61,071
3.75% Convertible Senior Notes due October 15, 2018 (New)	—		287,221
4.0% Convertible Senior Notes due December 15, 2020	—		194,717
	$	—	$	543,009

The net carrying values of Ciena’s term loans were comprised of the following for the fiscal periods indicated (in thousands):

	October 31, 2018		October 31, 2017
Term Loan Payable due January 30, 2022	$	—	$	392,972
Term Loan Payable due September 28, 2025	693,450		—
	$	693,450	$	392,972

The following table sets forth the carrying value and the estimated fair value of Ciena’s 2025 Term Loan (in thousands):

	October 31, 2018
	Carrying Value(1)		Fair Value(2)
Term Loan Payable due September 28, 2025	$	693,450	$	702,625

(1) Includes unamortized debt discount and debt issuance costs.

(2) Ciena’s term loan is categorized as Level 2 in the fair value hierarchy. Ciena estimated the fair value of its 2025 Term Loan using a market approach based upon observable inputs, such as current market transactions involving comparable securities.

Schedule of details of notes

The principal balance, unamortized debt discount, deferred debt issuance costs and net carrying value of Ciena’s 2025 Term Loan were as follows as of October 31, 2018 (in thousands):

	Principal Balance		Unamortized Discount			Deferred Debt Issuance Costs			Net Carrying Value
Term Loan Payable due September 28, 2025	$	700,000	$	(2,300	)	$	(4,250	)	$	693,450