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Retirement And Other Benefit Plans
 3 Months Ended
Apr. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Retirement and Other Benefit Plans
Note 9
Retirement and Other Benefit Plans
 
The following table sets forth the components of net periodic benefit income for the Company, including domestic and Canadian plans:
 
Pension Benefits
Other Postretirement Benefits
 
Thirteen Weeks Ended
Thirteen Weeks Ended
($ thousands)
April 30, 2016

May 2, 2015

April 30, 2016

May 2, 2015

Service cost
$
2,263

$
3,329

$
—

$
—

Interest cost
3,861

3,586

15

15

Expected return on assets
(7,223
)
(7,655
)
—

—

Amortization of:
 

 

 

 

Actuarial loss (gain)
38

166

(55
)
(48
)
Prior service income
(460
)
(475
)
—

—

Total net periodic benefit income
$
(1,521
)
$
(1,049
)
$
(40
)
$
(33
)