Marketable Securities (Tables)

6 Months Ended

Jun. 25, 2022

Investments, Debt and Equity Securities [Abstract]

Schedule Of Marketable Securities

			Gross		Gross
(amounts in thousands)	Amortized		Unrealized		Unrealized		Fair
June 25, 2022	Cost		Holding Gains		Holding Losses		Value
Available-for-sale:
Level 1
Equity securities							$	6,365
Level 2
Corporate and municipal bonds	$	148,793	$	1,562	$	(9,093)		141,262
Commercial Paper		81,821		12		(68)		81,765
	$	230,614	$	1,574	$	(9,161)	$	229,392

			Gross		Gross
(amounts in thousands)	Amortized		Unrealized		Unrealized		Fair
December 25, 2021	Cost		Holding Gains		Holding Losses		Value
Available-for-sale:
Level 1
Equity securities							$	6,509
Level 2
Corporate and municipal bonds	$	151,947	$	4,753	$	(2,384)		154,315
Commercial Paper		44,931		2		(13)		44,920
	$	196,878	$	4,755	$	(2,397)	$	205,744

Schedule Of Maturities Of Marketable Securities

	Amortized		Fair
(amounts in thousands)	Cost		Value
Available-for-sale:
Due within one year	$	103,326	$	102,778
Due after one year through five years		79,661		76,970
Due after five years through ten years		47,627		43,279
	$	230,614	$	223,027