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Note 3 - Inventories (Details) - Summary of Inventories (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Mar. 31, 2014
Summary of Inventories [Abstract]
Raw materials	$ 7,839	$ 5,758
Work-in-process	590	272
Finished goods	1,973	2,068
Less: reserve	(452)	(327)
	$ 9,950	$ 7,771

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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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