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Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2022

Investments, Debt and Equity Securities [Abstract]

Schedule Of Marketable Securities


					Gross			Gross
(amounts in thousands)		Amortized			Unrealized			Unrealized			Fair
December 31, 2022		Cost			Holding Gains			Holding Losses			Value
Available-for-sale:
Level 1
Equity securities											$	5,185
Level 2
Corporate and municipal bonds		$	190,025		$	2,110		$	(10,901)			181,234
Total		$	190,025		$	2,110		$	(10,901)		$	186,419


					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
Total		$	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		$	50,645		$	48,635
Due after one year through five years			86,011			82,959
Due after five years through ten years			29,923			26,843
Due after ten years			23,446			22,797
Total		$	190,025		$	181,234