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Employee Retirement and Deferred Compensation Plans
 12 Months Ended
Oct. 31, 2016
Compensation and Retirement Disclosure [Abstract]  
Pension and Other Postretirement Benefits Disclosure
Employee Retirement and Deferred Compensation Plans
Salary Deferral Savings Plans
We maintain salary deferral savings plans covering substantially all employees. We recognized an expense, net of plan forfeitures, with respect to the plans of $10.3 million, $8.9 million, and $7.8 million for the fiscal years ended October 31, 2016, 2015, and 2014, respectively.
Deferred Compensation Plan
We have an unfunded, nonqualified deferred compensation plan that permits eligible employees to defer a portion of their compensation. The deferred compensation, together with certain of our contributions, earns various rates of return depending upon when the compensation was deferred. A portion of the deferred compensation and interest earned may be forfeited by a participant if he or she elects to withdraw the compensation prior to the end of the deferral period. We accrued $24.6 million and $21.6 million at October 31, 2016 and 2015, respectively, for our obligations under the plan.
Defined Benefit Retirement Plans
We have two unfunded defined benefit retirement plans. Retirement benefits generally vest when the participant reaches normal retirement age (age 62). Unrecognized prior service costs are being amortized over the period from the date participants enter the plans until their interests are fully vested. We used a 2.98%, 3.55%, and 3.55% discount rate in our calculation of the present value of our projected benefit obligations at October 31, 2016, 2015, and 2014, respectively. The rates represent the approximate long-term investment rate at October 31 of the fiscal year for which the present value was calculated. Information related to the plans is based on actuarial information calculated as of October 31, 2016, 2015 and 2014.
Information related to our retirement plans for each of the fiscal years ended October 31, 2016, 2015, and 2014, is as follows (amounts in thousands):
 
2016
 
2015
 
2014
Plan costs:
 
 
 
 
 
Service cost
$
562

 
$
579

 
$
470

Interest cost
1,276

 
1,232

 
1,277

Amortization of prior service cost
947

 
806

 
662

Amortization of unrecognized losses
42

 
81

 
8

 
$
2,827

 
$
2,698

 
$
2,417

Projected benefit obligation:
 
 
 
 
 
Beginning of year
$
35,815

 
$
34,606

 
$
32,136

Plan amendments adopted during year
757

 
768

 
511

Service cost
562

 
579

 
470

Interest cost
1,276

 
1,232

 
1,277

Benefit payments
(1,129
)
 
(988
)
 
(971
)
Change in unrecognized loss
1,699

 
(382
)
 
1,183

Projected benefit obligation, end of year
$
38,980

 
$
35,815

 
$
34,606

Unamortized prior service cost:
 
 
 
 
 
Beginning of year
$
2,965

 
$
3,003

 
$
3,154

Plan amendments adopted during year
757

 
768

 
511

Amortization of prior service cost
(947
)
 
(806
)
 
(662
)
Unamortized prior service cost, end of year
$
2,775

 
$
2,965

 
$
3,003

Accumulated unrecognized loss, October 31
$
2,898

 
$
1,240

 
$
1,703

Accumulated benefit obligation, October 31
$
38,980

 
$
35,815

 
$
34,606

Accrued benefit obligation, October 31
$
38,980

 
$
35,815

 
$
34,606


The table below provides, based upon the estimated retirement dates of the participants in the retirement plans, the amounts of benefits we would be required to pay in each of the next five fiscal years and for the five fiscal years ended October 31, 2026 in the aggregate (in thousands):
Year ending October 31,
 
Amount
2017
 
$
1,326

2018
 
$
2,124

2019
 
$
2,503

2020
 
$
2,611

2021
 
$
2,702

November 1, 2021 – October 31, 2026
 
$
15,290