Note 4 - Inventories - Inventories (Details) - USD ($)	Nov. 29, 2015	Mar. 01, 2015
Inventories:
Raw materials	$ 6,446,000	$ 7,376,000
Work-in-process	2,343,000	3,114,000
Finished goods	3,445,000	3,605,000
Manufacturing supplies	407,000	344,000
	$ 12,641,000	$ 14,439,000	[1]

[1] The balance sheet at March 1, 2015 has been derived from the audited financial statements at that date.