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Note 9 - Warranty Arrangements (Detail) - Warranty Accrual Activity (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
Beginning balance	$ 193	$ 310
Accruals for warranties issued during the period		318
Utilization	(125)	(548)
	$ 68	$ 80

- Definition

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.

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