Accumulated Other Comprehensive Earnings (Losses) (Tables)

3 Months Ended

Mar. 26, 2022

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Earnings (Losses) [Table Text Block]

A reconciliation of the changes in accumulated other comprehensive earnings (losses) net of income taxes for the three months ended March 26, 2022 and March 27, 2021 is as follows:

	Investments			Postretirement Benefit		Accumulated Other Comprehensive Earnings (Losses)
		(Amounts are in thousands)
2022
Balances at December 25, 2021		$	7,054		(12,475)		(5,421)
Unrealized loss on debt securities		(374,643)			—		(374,643)
Net realized gain on debt securities reclassified to investment income		(826)			—		(826)
Adjustment to postretirement benefit obligation		—			338		338
Net other comprehensive (losses) earnings		(375,469)			338		(375,131)
Balances at March 26, 2022		$	(368,415)		(12,137)		(380,552)
2021
Balances at December 26, 2020		$	223,904		(22,953)		200,951
Unrealized loss on debt securities		(103,548)			—		(103,548)
Net realized gain on debt securities reclassified to investment income		(5,583)			—		(5,583)
Adjustment to postretirement benefit obligation		—			1,379		1,379
Net other comprehensive (losses) earnings		(109,131)			1,379		(107,752)
Balances at March 27, 2021		$	114,773		(21,574)		93,199