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Note 9 - Related Party (Details Textual) (USD $)	3 Months Ended		6 Months Ended
Note 9 - Related Party (Details Textual) (USD $)	Nov. 30, 2014	Nov. 24, 2013	Nov. 30, 2014	Nov. 24, 2013	May 25, 2014
Related Party Transactions [Abstract]
Accounts Receivable, Related Parties, Current	$ 162,000		$ 162,000		$ 304,000
Windset [Member]
Related Party Transactions [Abstract]
Revenue from Related Parties	161,000	16,000	195,000	21,000
Accounts Receivable, Related Parties, Current	162,000		162,000		304,000
Accounts Payable, Related Parties	332,000		332,000		134,000
Cost of Sales [Member] \| Windset [Member]
Related Party Transactions [Abstract]
Related Party Transaction, Purchases from Related Party	$ 297,000	$ 431,000	$ 708,000	$ 812,000

Amount for accounts payable to related parties.

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- Definition

Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer.

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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