Financial Instruments (Tables)

12 Months Ended

Mar. 02, 2019

Marketable Securities [Abstract]

Amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale

(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
March 2, 2019	$	12,481	$	59	$	(108	)	$	12,432
March 3, 2018	9,183		8		(138		)	9,053

Schedule of length of time that available-for-sale securities were in continuous unrealized loss positions

Financial assets and liabilities measured at fair value on a recurring basis were:

(In thousands)	Quoted Prices in Active Markets (Level 1)		Other Observable Inputs (Level 2)		Total Fair Value
March 2, 2019
Cash equivalents
Money market funds	$	2,015	$	—	$	2,015
Commercial paper	—		300		300
Total cash equivalents	2,015		300		2,315
Short-term securities
Municipal and corporate bonds	—		402		402
Long-term securities
Municipal and corporate bonds	—		12,030		12,030
Total assets at fair value	$	2,015	$	12,732	$	14,747
March 3, 2018
Cash equivalents
Money market funds	$	2,901	$	—	$	2,901
Commercial paper	—		400		400
Total cash equivalents	2,901		400		3,301
Short-term securities
Municipal and corporate bonds	—		423		423
Long-term securities
Municipal and corporate bonds	—		8,630		8,630
Total assets at fair value	$	2,901	$	9,453	$	12,354

Schedule of amortized cost and estimated fair values of investments by contractual maturity

The amortized cost and estimated fair values of our municipal and corporate bonds at March 2, 2019, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities, as borrowers may have the right to call or prepay obligations with or without penalty. Gross realized gains and losses were insignificant for all periods presented.

(In thousands)	Amortized Cost		Estimated Market Value
Due within one year	$	405	$	402
Due after one year through five years	9,479		9,439
Due after five years through 10 years	1,834		1,834
Due after 10 years through 15 years	—		—
Due beyond 15 years	763		757
Total	$	12,481	$	12,432