Financial Instruments (Tables)

6 Months Ended

Sep. 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
September 1, 2018	13,368	15	(186	)	13,197
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 September 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	$	543	$	539
Due after one year through five years	7,897		7,797
Due after five years through 10 years	3,811		3,751
Due after 10 years through 15 years	200		200
Due beyond 15 years	917		910
Total	$	13,368	$	13,197

Fair value measurements

In thousands	Quoted Prices in Active Markets (Level 1)		Other Observable Inputs (Level 2)		Total Fair Value
September 1, 2018
Cash equivalents
Money market funds	$	3,168	$	—	$	3,168
Commercial paper	—		800		800
Total cash equivalents	3,168		800		3,968
Short-term securities
Municipal and corporate bonds	—		539		539
Long-term securities
Municipal and corporate bonds	—		12,658		12,658
Total assets at fair value	$	3,168	$	13,997	$	17,165
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