DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS Warranty Obligation Accrual (Tables)

3 Months Ended

Jun. 30, 2011

Balance Sheet Related Disclosures [Abstract]

Changes in the warranty obligation accrual [Table Text Block]

Changes during the three months ended June 30, 2011 in the warranty obligation accrual, which is included as a component of Accrued liabilities in the Condensed consolidated balance sheets, are as follows:

	Three Months Ended
(in thousands)	June 30, 2011
Warranty obligation accrual at March 31, 2011	$	11,016
Warranty provision relating to products shipped	4,720
Deductions for warranty claims processed	(2,800		)
Warranty obligation accrual at June 30, 2011	$	12,936