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Employee Retirement Benefits Employee Retirement Benefits (Tables)
 12 Months Ended
Jan. 31, 2013
Employee Retirement Benefits [Abstract]  
The accumulated benefit obligation
The accumulated benefit obligation for these benefits is as follows:
 
 
For the years ended January 31,
 
 
2013
 
2012
 
2011
Benefit obligation at beginning of year
 
$
7,560

 
$
5,969

 
$
5,512

Service cost
 
187

 
121

 
62

Interest cost
 
335

 
334

 
324

Actuarial loss and assumption changes
 
433

 
1,363

 
237

Retiree benefits paid
 
(208
)
 
(227
)
 
(166
)
Benefit obligation at end of year
 
$
8,307

 
$
7,560

 
$
5,969
The liability and expense reflected in the balance sheet and income statement
The liability and net periodic benefit cost reflected in the Consolidated Balance Sheets and Consolidated Statements of Income and Comprehensive Income were as follows:
 
 
For the years ended January 31,
 
 
2013
 
2012
 
2011
Beginning liability balance
 
$
7,560

 
$
5,969

 
$
5,512

Net periodic benefit cost
 
755

 
582

 
552

Other comprehensive (income) loss
 
200

 
1,236

 
71

Total recognized in net and other comprehensive income
 
955

 
1,818

 
623

Retiree benefits paid
 
(208
)
 
(227
)
 
(166
)
Ending liability balance
 
$
8,307

 
$
7,560

 
$
5,969

 
 
 
 
 
 
 
Current portion in accrued liabilities
 
$
235

 
$
212

 
$
212

Long-term portion in other liabilities
 
$
8,072

 
$
7,348

 
$
5,757

Assumptions used to calculate benefit obligation:
 
 
 
 
 
 
Discount rate
 
4.25
%
 
4.50
%
 
5.75
%
Wage inflation rate
 
4.00
%
 
4.00
%
 
4.00
%
Health care cost trend rates:
 
 
 
 
 
 
Health care cost trend rate assumed for next year
 
8.10
%
 
8.60
%
 
9.00
%
Ultimate health care cost trend rate
 
5.00
%
 
5.00
%
 
5.00
%
Year that the rate reaches the ultimate trend rate
 
2025

 
2025

 
2025
Effect of one-percentage-point change in assumed health care cost trend rates
The impact of a one-percentage point change in assumed health care rates would have the following effects:
 
 
January 31, 2013
 
 
One-percentage-point increase
 
One-percentage-point decrease
Effect on total of service and interest cost components
 
$
75

 
$
(53
)
 
 
 
 
 
Effect on accumulated postretirement benefit obligation
 
$
1,588

 
$
(1,288
)
Schedule of pre-tax accumulated other comprehensive income related to benefit obligation and net periodic benefit cost not yet recognized
The following tables set forth the plans pre-tax adjustment to accumulated other comprehensive income/loss (AOCI):
 
 
For the years ended January 31,
 
 
2013
 
2012
 
2011
Amounts not yet recognized in net periodic benefit cost:
 
 
 
 
 
 
Net actuarial loss
 
$
3,441

 
$
3,218

 
$
1,912

Transition obligation
 
—

 
23

 
45

Total pre-tax accumulated other comprehensive loss
 
$
3,441

 
$
3,241

 
$
1,957

 
 
 
 
 
 
 
Pre-tax accumulated other comprehensive loss - beginning of year related to benefit obligation
 
$
3,241

 
$
1,957

 
$
1,935

Reclassification adjustments recognized in benefit cost:
 
 
 
 
 
 
Recognized net (loss)
 
(210
)
 
(104
)
 
(144
)
Amortization of transition obligation
 
(23
)
 
(23
)
 
(23
)
Amounts recognized in AOCI during the year:
 
 
 
 
 
 
Net actuarial loss
 
433

 
1,411

 
189

Pre-tax accumulated other comprehensive loss - end of year related to benefit obligation
 
$
3,441

 
$
3,241

 
$
1,957