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Note 3 - Inventories (Details) - Summary of Inventories (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Summary of Inventories [Abstract]
Raw materials	$ 5,758	$ 4,052
Work-in-process	272	271
Finished goods	2,068	1,514
Less reserve	(327)	(261)
	$ 7,771	$ 5,576

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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