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Marketable Securities and Investments (Tables)
 12 Months Ended
Dec. 29, 2019
Marketable Securities [Abstract]  
Schedule of Investments, Noncurrent [Table Text Block]
Investments as of December 29, 2019 and December 30, 2018 consisted of the following:
 
 
December 29,
2019
 
December 30,
2018
 
(In thousands)
Marketable securities
$
2,906

 
$
2,447

Equity investments
29,228

 
16,783

 
$
32,134

 
$
19,230
Available-for-sale Securities [Table Text Block]
Marketable securities classified as available for sale as of December 29, 2019 and December 30, 2018 consisted of the following:
 
 
Market Value
 
Gross Unrealized Holding
 
Cost
 
Gains
 
(Losses)
 
 
(In thousands)
 
 
December 29, 2019
 
 
 
 
 
 
 
Equity securities
$
752

 
$
1,109

 
$
—

 
$
(357
)
Fixed-income securities
7

 
7

 
—

 
—

Other
2,147

 
2,210

 
—

 
(63
)
 
$
2,906

 
$
3,326

 
$
—

 
$
(420
)
December 30, 2018
 
 
 
 
 
 
 
Equity securities
$
671

 
$
1,037

 
$
—

 
$
(366
)
Fixed-income securities
22

 
22

 
—

 
—

Other
1,754

 
1,817

 
—

 
(63
)
 
$
2,447

 
$
2,876

 
$
—

 
$
(429
)