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Pensions and Other Postretirement Benefit Plans
 9 Months Ended
May 31, 2012
Compensation and Retirement Disclosure [Abstract]  
PENSIONS AND OTHER POSTRETIREMENT BENEFIT PLANS
PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS
The components of the Company’s net periodic benefit cost for defined benefit pension plans and other postretirement benefits for the three and nine months ended May 31, 2012 and 2011 are shown below:
 
Three months ended May 31,
 
Nine months ended May 31,
 
2012
 
2011
 
2012
 
2011
 
(In thousands)
Net periodic pension cost included the following components:
 
 
 
 
 
 
 
Service cost
$
707

 
$
910

 
$
2,163

 
$
2,615

Interest cost
1,290

 
1,242

 
3,919

 
3,585

Expected return on plan assets
(325
)
 
(312
)
 
(971
)
 
(911
)
Net actuarial loss and net amortization of prior service cost
115

 
441

 
345

 
1,273

Recognized gain due to plan curtailment
(101
)
 
—

 
(310
)
 
—

Special termination benefits
—

 
—

 
79

 
—

Net periodic benefit cost
$
1,686

 
$
2,281

 
$
5,225

 
$
6,562

Postretirement benefit cost included the following components:
 
 
 
 
 
 
 
Service cost
$
7

 
$
8

 
$
21

 
$
23

Interest cost
152

 
187

 
455

 
560

Net actuarial loss and net amortization of prior service cost (credit)
(140
)
 
(86
)
 
(420
)
 
(258
)
Net periodic benefit cost
$
19

 
$
109

 
$
56

 
$
325