Marketable Securities (Details 3) - USD ($) $ in Thousands	Jun. 02, 2018	Mar. 03, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	$ 2,179	$ 2,901
Mutual funds	2,273
Municipal and corporate bonds	121	423
Total short-term securities	2,394
Commercial paper		400
Total cash equivalents		3,301
Municipal and corporate bonds	12,738	8,630
Total assets at fair value	17,311	12,354
Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	2,179	2,901
Mutual funds	2,273
Municipal and corporate bonds	0	0
Total short-term securities	2,273
Commercial paper		0
Total cash equivalents		2,901
Municipal and corporate bonds	0	0
Total assets at fair value	4,452	2,901
Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0	0
Mutual funds	0
Municipal and corporate bonds	121	423
Total short-term securities	121
Commercial paper		400
Total cash equivalents		400
Municipal and corporate bonds	12,738	8,630
Total assets at fair value	$ 12,859	$ 9,453