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Note 8 - Warranty Obligations (Details) - Product Warranty Accrual (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 29, 2013	Jun. 30, 2012
Product Warranty Accrual [Abstract]
Balance at beginning of period	$ 114	$ 210
Provision, net	(15)	4
Warranty costs incurred	(6)	(25)
Balance at end of period	$ 93	$ 189

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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