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Working Capital (Schedule of Inventory) (Details) (USD $)
In Thousands, unless otherwise specified
Feb. 28, 2015
Mar. 01, 2014
Working Capital [Abstract]    
Raw materials $ 19,761us-gaap_InventoryRawMaterialsNetOfReserves $ 20,348us-gaap_InventoryRawMaterialsNetOfReserves [1]
Work-in-process 14,385us-gaap_InventoryWorkInProcessNetOfReserves 11,552us-gaap_InventoryWorkInProcessNetOfReserves [1]
Finished goods 23,076us-gaap_InventoryFinishedGoodsNetOfReserves 16,434us-gaap_InventoryFinishedGoodsNetOfReserves [1]
Costs and earnings in excess of billings on uncompleted contracts 4,186us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear 5,101us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear [1]
Total inventories $ 61,408us-gaap_InventoryNet $ 53,435us-gaap_InventoryNet [1]
[1] During the fourth quarter of fiscal 2015, the Company changed its method of accounting for those inventories which were accounted for under the LIFO method to the FIFO method. See Note 1 for discussion of this accounting change and its related impact.