Financial Instruments (Tables)

9 Months Ended

Dec. 01, 2018

Marketable Securities [Abstract]

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

We hold the following available-for-sale marketable securities, made up of municipal and corporate bonds:

In thousands	Amortized Cost	Gross Unrealized Gains	Gross Unrealized Losses		Estimated Fair Value
December 1, 2018	12,534	4	(249	)	12,289
March 3, 2018	9,183	8	(138	)	9,053

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

The amortized cost and estimated fair values of municipal bonds at December 1, 2018, 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.

In thousands	Amortized Cost		Estimated Fair Value
Due within one year	$	447	$	441
Due after one year through five years	8,781		8,598
Due after five years through 10 years	2,541		2,493
Due after 10 years through 15 years	—		—
Due beyond 15 years	765		757
Total	$	12,534	$	12,289

Fair value measurements

In thousands	Quoted Prices in Active Markets (Level 1)		Other Observable Inputs (Level 2)		Total Fair Value
December 1, 2018
Cash equivalents
Money market funds	$	2,145	$	—	$	2,145
Commercial paper	—		400		400
Total cash equivalents	2,145		400		2,545
Short-term securities
Municipal and corporate bonds	—		442		442
Long-term securities
Municipal and corporate bonds	—		11,847		11,847
Total assets at fair value	$	2,145	$	12,689	$	14,834
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