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Accumulated Other Comprehensive Earnings (Notes)
 9 Months Ended
Sep. 29, 2018
Equity [Abstract]  
Comprehensive Income (Loss) Note [Text Block]
(7)
Accumulated Other Comprehensive Earnings
A reconciliation of the changes in accumulated other comprehensive earnings (losses) net of income taxes for the three months ended September 29, 2018 and September 30, 2017 is as follows:
 
 
Investments
 
Postretirement Benefits
 
Accumulated Other Comprehensive Earnings
 
 
 
(Amounts are in thousands)
 
2018
 
 
 
 
 
 
 
 
 
 
 
 
Balances at June 30, 2018
 
 
$
(56,387
)
 
 
 
(14,292
)
 
 
 
(70,679
)
 
Unrealized loss on debt securities
 
 
(2,076
)
 
 
 
—

 
 
 
(2,076
)
 
Net realized gain on debt securities reclassified to investment income
 
 
(181
)
 
 
 
—

 
 
 
(181
)
 
Amortization of actuarial loss reclassified to other nonoperating income, net
 
 
—

 
 
 
564

 
 
 
564

 
Net other comprehensive (losses) earnings
 
 
(2,257
)
 
 
 
564

 
 
 
(1,693
)
 
Balances at September 29, 2018
 
 
$
(58,644
)
 
 
 
(13,728
)
 
 
 
(72,372
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2017
 
 
 
 
Balances at July 1, 2017
 
 
$
33,639

 
 
 
(5,691
)
 
 
 
27,948

 
Unrealized gain on debt and equity securities
 
 
49,043

 
 
 
—

 
 
 
49,043

 
Net realized gain on debt and equity securities reclassified to investment income
 
 
(6,334
)
 
 
 
—

 
 
 
(6,334
)
 
Net other comprehensive earnings
 
 
42,709

 
 
 
—

 
 
 
42,709

 
Balances at September 30, 2017
 
 
$
76,348

 
 
 
(5,691
)
 
 
 
70,657

 


A reconciliation of the changes in accumulated other comprehensive earnings (losses) net of income taxes for the nine months ended September 29, 2018 and September 30, 2017 is as follows:
 
 
Investments
 
Postretirement Benefits
 
Accumulated Other Comprehensive Earnings
 
 
 
(Amounts are in thousands)
 
2018
 
 
 
 
 
 
 
 
 
 
 
 
Balances at December 30, 2017
 
 
$
168,057

 
 
 
(15,421
)
 
 
 
152,636

 
Unrealized loss on debt securities
 
 
(28,657
)
 
 
 
—

 
 
 
(28,657
)
 
Net realized loss on debt securities reclassified to investment income
 
 
266

 
 
 
—

 
 
 
266

 
Amortization of actuarial loss reclassified to other nonoperating income, net
 
 
—

 
 
 
1,693

 
 
 
1,693

 
Net other comprehensive (losses) earnings
 
 
(28,391
)
 
 
 
1,693

 
 
 
(26,698
)
 
Cumulative effect of net unrealized gain on equity securities reclassified to retained earnings
 
 
(198,310
)
 
 
 
—

 
 
 
(198,310
)
 
Balances at September 29, 2018
 
 
$
(58,644
)
 
 
 
(13,728
)
 
 
 
(72,372
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2017
 
 
 
 
Balances at December 31, 2016
 
 
$
29,118

 
 
 
(5,691
)
 
 
 
23,427

 
Unrealized gain on debt and equity securities
 
 
111,585

 
 
 
—

 
 
 
111,585

 
Net realized gain on debt and equity securities reclassified to investment income
 
 
(64,355
)
 
 
 
—

 
 
 
(64,355
)
 
Net other comprehensive earnings
 
 
47,230

 
 
 
—

 
 
 
47,230

 
Balances at September 30, 2017
 
 
$
76,348

 
 
 
(5,691
)
 
 
 
70,657

 
 
 
 
 
 
 
 
 
 
 
 
 
 
In 2018, the Company adopted the ASU requiring equity securities be measured at fair value with net unrealized gains and losses from changes in the fair value recognized in earnings. Prior to adoption of the ASU, equity securities were classified as available-for-sale and carried at fair value. Changes in fair value determined to be temporary were reported in other comprehensive earnings net of income taxes. Upon adoption of the ASU, the Company reclassified the cumulative effect of the net unrealized gain on equity securities net of income taxes as of December 31, 2017 of $198,310,000 from accumulated other comprehensive earnings to retained earnings.