Working Capital (Schedule of Inventory) (Details) - USD ($) $ in Thousands	Feb. 27, 2016	Feb. 28, 2015
Working Capital [Abstract]
Raw materials	$ 21,404	$ 19,761
Work-in-process	9,958	14,385
Finished goods	25,486	23,076
Costs and earnings in excess of billings on uncompleted contracts	6,538	4,186
Total inventories	$ 63,386	$ 61,408