Accumulated Other Comprehensive Earnings (Losses) (Notes)

12 Months Ended

Dec. 25, 2021

Equity [Abstract]

Accumulated Other Comprehensive Earnings (Losses)[Text Block]

(8)    Accumulated Other Comprehensive Earnings (Losses)

A reconciliation of the changes in accumulated other comprehensive earnings (losses) net of income taxes for 2021, 2020 and 2019 is as follows:

	Investments			Postretirement Benefit		Accumulated Other Comprehensive Earnings (Losses)
		(Amounts are in thousands)
Balances at December 29, 2018		$	(49,033)		(6,729)		(55,762)
Unrealized gain on debt securities		148,141			—		148,141
Net realized gain on debt securities reclassified to investment income		(602)			—		(602)
Adjustment to postretirement benefit obligation		—			(10,488)		(10,488)
Net other comprehensive earnings (losses)		147,539			(10,488)		137,051
Balances at December 28, 2019		98,506			(17,217)		81,289
Unrealized gain on debt securities		138,989			—		138,989
Net realized gain on debt securities reclassified to investment income		(13,591)			—		(13,591)
Adjustment to postretirement benefit obligation		—			(5,736)		(5,736)
Net other comprehensive earnings (losses)		125,398			(5,736)		119,662
Balances at December 26, 2020		223,904			(22,953)		200,951
Unrealized loss on debt securities		(200,964)			—		(200,964)
Net realized gain on debt securities reclassified to investment income		(15,886)			—		(15,886)
Adjustment to postretirement benefit obligation		—			10,478		10,478
Net other comprehensive (losses) earnings		(216,850)			10,478		(206,372)
Balances at December 25, 2021		$	7,054		(12,475)		(5,421)