Marketable Securities (Details) - USD ($) $ in Thousands	Aug. 27, 2016	Feb. 27, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 12,835
Amortized Cost	43,125	$ 42,571
Gross Unrealized Gains	349	285
Gross Unrealized Losses	130	164
Estimated Market Value, Total	13,109
Available-for-sale Securities	43,344	42,692
Mutual Fund [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	30,290	30,178
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(55)	(55)
Estimated Market Value, Total	30,235	30,123
Municipal bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	12,835	12,393
Gross Unrealized Gains	349	285
Gross Unrealized Losses	75	109
Estimated Market Value, Total	$ 13,109	$ 12,569