Marketable Securities (Tables)

9 Months Ended

Sep. 25, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule Of Marketable Securities

			Gross		Gross
(amounts in thousands)	Amortized		Unrealized		Unrealized		Fair
September 25, 2021	Cost		Holding Gains		Holding Losses		Value
Available-for-sale:
Level 1
Equity securities							$	6,947
Level 2
Corporate and municipal bonds	$	106,904	$	4,923	$	(1,290)		110,537
	$	106,904	$	4,923	$	(1,290)	$	117,484

			Gross		Gross
(amounts in thousands)	Amortized		Unrealized		Unrealized		Fair
December 26, 2020	Cost		Holding Gains		Holding Losses		Value
Available-for-sale:
Level 1
Equity securities							$	7,410
Level 2
Corporate and municipal bonds	$	99,861	$	5,723	$	(1,139)		104,445
	$	99,861	$	5,723	$	(1,139)	$	111,855

Schedule Of Maturities Of Marketable Securities

	Amortized		Fair
(amounts in thousands)	Cost		Value
Available-for-sale:
Due within one year	$	7,948	$	8,021
Due after one year through five years		52,149		54,463
Due after five years through ten years		46,807		48,053
	$	106,904	$	110,537