Product Warranty Costs

9 Months Ended

Oct. 31, 2011

Product Warranty Costs [Abstract]

Product Warranty Costs [Text Block]

Product Warranty Costs

Accruals necessary for product warranties are estimated based on historical warranty costs and average time elapsed between purchases and returns for each division. Additional accruals are made for any significant, discrete warranty issues. Changes in the warranty accrual were as follows:

	Three Months Ended						Nine Months Ended
	October 31, 2011			October 31, 2010			October 31, 2011			October 31, 2010
Balance, beginning of period	$	1,642		$	1,812		$	1,437		$	1,259
Accrual for warranties	763			606			2,352			2,051
Settlements made (in cash or in kind)	(1,066		)	(618		)	(2,450		)	(1,510		)
Balance, end of period	$	1,339		$	1,800		$	1,339		$	1,800