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Pension plan
 6 Months Ended
Jul. 31, 2012
Pension plan [Abstract]  
Pension plan [Text Block]
Pension plan. The Winchester filtration hourly rated employees are covered by a defined benefit plan. The major categories of the pension plan's investments remained the same.
Level 1 market value of plan assets
July 31, 2012

January 31, 2012

Equity securities

$3,151


$3,018

U.S. bond market
2,060

1,968

High-quality inflation-indexed bonds issued by the U.S. Treasury and government agencies as well as domestic corporations
278

268

Real estate
121

110

Subtotal
5,610

5,364

Level 2 significant other observable inputs
 
 
Money market fund
299

138

Total

$5,909


$5,502



 
Three Months Ended July 31,
 
Six Months Ended July 31,
Components of net periodic benefit costs
2012

2011

 
2012

2011

Service cost

$42


$32

 

$85


$63

Interest cost
74

82

 
149

156

Expected return on plan assets
(111
)
(102
)
 
(222
)
(203
)
Amortization of prior service cost
13

32

 
25

64

Recognized actuarial loss
44

22

 
87

31

Net periodic benefit costs

$62


$66

 

$124


$111



Employer contributions for the remainder of the fiscal year ending January 31, 2013 are expected to be $200 thousand. For the six months ended July 31, 2012, contributions of $292 thousand were made.