Marketable Securities (Details) - USD ($) $ in Thousands	May 28, 2016	Feb. 27, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 13,101
Amortized Cost	43,334	$ 42,571
Gross Unrealized Gains	248	285
Gross Unrealized Losses	150	164
Estimated Market Value, Total	13,255
Available-for-sale Securities	43,432	42,692
Mutual Fund [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	30,233	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	(56)	(55)
Estimated Market Value, Total	30,177	30,123
Municipal bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	13,101	12,393
Gross Unrealized Gains	248	285
Gross Unrealized Losses	94	109
Estimated Market Value, Total	$ 13,255	$ 12,569