Product Warranties (Tables)

6 Months Ended

Sep. 30, 2012

Product Warranties and Other Commitments [Abstract]

Changes in the warranty liability

Changes in accrued warranty costs were as follows:

	Three months ended September 30
	2012			2011
Balance, July 1	$	10,521		$	14,408
Accruals for warranties issued		1,385			1,849
Accruals (reversals) related to pre-existing warranties		1,689			(624	)
Settlements		(1,329	)		(2,244	)
Effect of exchange rate changes		70			(542	)
Balance, September 30	$	12,336		$	12,847

	Six months ended September 30
	2012			2011
Balance, April 1	$	11,385		$	14,681
Accruals for warranties issued		2,727			3,398
Accruals (reversals) related to pre-existing warranties		1,209			(467	)
Settlements		(2,757	)		(4,384	)
Effect of exchange rate changes		(228	)		(381	)
Balance, September 30	$	12,336		$	12,847