Inventories (Details) - USD ($)	May. 31, 2015	Feb. 28, 2015
Schedule of Inventories
Inventory, Raw Materials, Gross	$ 1,634,000	$ 2,124,000
Inventory, Work-In-Process, Gross	4,055,000	3,744,000
Inventory, Finished Goods, Gross	927,000	1,077,000
Inventory, Gross, Total	6,616,000	6,945,000
Inventory Raw Material Reserve	(407,000)	(404,000)
Inventory Work-In-Process Reserve	(1,635,000)	(1,624,000)
Inventory Finished Goods Reserve	(726,000)	(720,000)
Inventories, Reserve, Total	(2,768,000)	(2,748,000)
Inventory, Raw material, Net	1,227,000	1,720,000
Inventory, Work in Process, Net	2,420,000	2,120,000
Inventory, Finished Goods, Net	201,000	357,000
Inventories, Net, Total	$ 3,848,000	$ 4,197,000