Other Balance Sheet Details
 12 Months Ended
Oct. 31, 2012
Balance Sheet Related Disclosures [Abstract]  
OTHER BALANCE SHEET DETAILS
OTHER BALANCE SHEET DETAILS
As of the dates indicated, other long-term assets are comprised of the following (in thousands):
 
October 31,
 
2011
 
2012
Maintenance spares inventory, net
$
50,442

 
$
57,548

Deferred debt issuance costs, net
23,481

 
20,575

Embedded redemption feature
7,020

 
420

Restricted cash
27,507

 
2,413

Other
5,673

 
3,780

 
$
114,123

 
$
84,736



Deferred debt issuance costs are amortized using the straight line method which approximates the effect of the effective interest rate method through the maturity of the related debt. Amortization of debt issuance costs related to our convertible notes payable, which is included in interest expense, was $3.8 million, $5.3 million and $5.3 million for fiscal 2010, fiscal 2011 and fiscal 2012, respectively.
As of the dates indicated, accrued liabilities are comprised of the following (in thousands):
 
October 31,
 
2011
 
2012
Warranty
$
47,282

 
$
55,132

Compensation, payroll related tax and benefits
51,808

 
48,885

Vacation
27,808

 
29,581

Current restructuring liabilities
664

 
3,516

Interest payable
4,248

 
4,404

Other
65,194

 
68,022

 
$
197,004

 
$
209,540



The following table summarizes the activity in Ciena’s accrued warranty for the fiscal years indicated (in thousands):

Year ended
 
Beginning
 
 
 
 
 
 
 
Balance at end
October 31,
 
Balance
 
Acquired
 
Provisions
 
Settlements
 
of period
2010
 
$
40,196

 
$
24,041

 
$
15,353

 
$
25,218

 
$
54,372

2011
 
$
54,372

 
$
—

 
$
18,451

 
$
25,541

 
$
47,282

2012
 
$
47,282

 
$
—

 
$
33,418

 
$
25,568

 
$
55,132



As a result of the substantial completion of integration activities related to the MEN Business, Ciena consolidated certain support operations and processes during fiscal 2011, resulting in a reduction in costs to service future warranty obligations. As a result of the lower expected costs, Ciena reduced its warranty liability by $6.9 million, which had the effect of reducing the provisions in the table above. The increase in fiscal 2012 warranty provision was driven primarily by sales that included longer-term support obligations and technical support requirements from additional geographies.
As of the dates indicated, deferred revenue is comprised of the following (in thousands):
 
October 31,
 
2011
 
2012
Products
$
42,915

 
$
29,279

Services
80,883

 
77,797

 
123,798

 
107,076

Less current portion
(99,373
)
 
(79,516
)
Long-term deferred revenue
$
24,425

 
$
27,560