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Accumulated Other Comprehensive Earnings (Losses) (Notes)
9 Months Ended
Sep. 26, 2020
Equity [Abstract]  
Accumulated Other Comprehensive Earnings (Losses) Note [Text Block] Accumulated Other Comprehensive Earnings (Losses)
A reconciliation of the changes in accumulated other comprehensive earnings (losses) net of income taxes for the three months ended September 26, 2020 and September 28, 2019 is as follows:
Investments
Postretirement Benefit
Accumulated Other Comprehensive Earnings (Losses)
(Amounts are in thousands)
2020
Balances at June 27, 2020$217,080 (15,588)201,492 
Unrealized gain on debt securities5,456 — 5,456 
Net realized gain on debt securities reclassified to investment income(3,678)— (3,678)
Adjustment to postretirement benefit obligation
— 814 814 
Net other comprehensive earnings1,778 814 2,592 
Balances at September 26, 2020$218,858 (14,774)204,084 
2019
Balances at June 29, 2019$68,948 (6,729)62,219 
Unrealized gain on debt securities
22,131 — 22,131 
Net realized gain on debt securities reclassified to investment income
(439)— (439)
Net other comprehensive earnings
21,692 — 21,692 
Balances at September 28, 2019$90,640 (6,729)83,911 
A reconciliation of the changes in accumulated other comprehensive earnings (losses) net of income taxes for the nine months ended September 26, 2020 and September 28, 2019 is as follows:
Investments
Postretirement Benefits
Accumulated Other Comprehensive Earnings (Losses)
(Amounts are in thousands)
2020
Balances at December 28, 2019$98,506 (17,217)81,289 
Unrealized gain on debt securities127,951 — 127,951 
Net realized gain on debt securities reclassified to investment income(7,599)— (7,599)
Adjustment to postretirement benefit obligation
— 2,443 2,443 
Net other comprehensive earnings120,352 2,443 122,795 
Balances at September 26, 2020$218,858 (14,774)204,084 
2019
Balances at December 29, 2018$(49,033)(6,729)(55,762)
Unrealized gain on debt securities
139,782 — 139,782 
Net realized gain on debt securities reclassified to investment income
(109)— (109)
Net other comprehensive earnings
139,673 — 139,673 
Balances at September 28, 2019$90,640 (6,729)83,911