Pension plan

6 Months Ended

Jul. 31, 2011

Pension Plan [Abstract]

Pension and Other Postretirement Benefits Disclosure [Text Block]

Pension plan. The Winchester Filtration hourly rated employees are covered by a defined benefit plan.  The fair value of the major categories of the pension plan's investments remained at the same levels.

Level 1 market value of plan assets	July 31, 2011		January 31, 2011
Equity securities		$2,868		$2,830
U.S. bond market	1,972		1,837
High-quality inflation-indexed bonds issued by the U.S. Treasury and government agencies as well as domestic corporations	254		229
Real estate	106		97
Subtotal	5,200		4,993
Level 2 significant other observable inputs
Money market fund	43		96
Total		$5,243		$5,089

	Three Months Ended July 31,						Six Months Ended July 31,
Components of net periodic benefit costs	2011			2010			2011			2010
Service cost		$32			$29			$63			$59
Interest cost	82			70			156			140
Expected return on plan assets	(102		)	(85		)	(203		)	(171		)
Amortization of prior service cost	32			33			64			66
Recognized actuarial loss	22			16			31			32
Net periodic benefit costs		$66			$63			$111			$126

Employer contributions for the remainder of the fiscal year ending January 31, 2012 are expected to be $330 thousand. For the six months endedJuly 31, 2011, contributions of $92 thousand were made.