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Note 4 - Detail of Certain Asset Accounts (Details) - Inventories (USD $)	Sep. 26, 2014	Mar. 31, 2014
Inventories [Abstract]
Raw material	$ 2,781,000	$ 3,093,000
Work-in-process	836,000	954,000
Finished products	1,183,000	702,000
Inventories, net	$ 4,800,000	$ 4,749,000

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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