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Note 4 - Inventories - Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Nov. 30, 2014
Mar. 02, 2014
Inventories:    
Raw materials $ 7,434us-gaap_InventoryRawMaterialsNetOfReserves $ 7,253us-gaap_InventoryRawMaterialsNetOfReserves
Work-in-process 2,788us-gaap_InventoryWorkInProcessNetOfReserves 3,097us-gaap_InventoryWorkInProcessNetOfReserves
Finished goods 3,637us-gaap_InventoryFinishedGoodsNetOfReserves 3,223us-gaap_InventoryFinishedGoodsNetOfReserves
Manufacturing supplies 338us-gaap_InventorySuppliesNetOfReserves 298us-gaap_InventorySuppliesNetOfReserves
$ 14,197us-gaap_InventoryNet $ 13,871us-gaap_InventoryNet [1]
[1] The balance sheet at March 2, 2014 has been derived from the audited financial statements at that date.