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Investments In Equity Securities (Tables)
 12 Months Ended
Dec. 31, 2019
Equity securities  
Debt Securities, Available-for-sale [Line Items]  
Schedule of Investments in Equity Securities
At December 31, 2019 and 2018, investments in equity securities were as follows:
(In thousands)
Cost
 
Gross Unrealized
 
Fair
Value
 
Carrying
Value
Gains
 
Losses
 
December 31, 2019
 

 
 

 
 

 
 

 
 

Common stocks
$
175,928

 
$
16,967

 
$
(26,090
)
 
$
166,805

 
$
166,805

Preferred stocks
169,171

 
148,243

 
(3,599
)
 
313,815

 
313,815

Total
$
345,099

 
$
165,210

 
$
(29,689
)
 
$
480,620

 
$
480,620

 
 
 
 
 
 
 
 
 
 
December 31, 2018
 

 
 

 
 

 
 
 
 

Common stocks
$
113,576

 
$
4,335

 
$
(19,719
)
 
$
98,192

 
$
98,192

Preferred stocks
115,201

 
72,364

 
(6,751
)
 
180,814

 
180,814

Total
$
228,777

 
$
76,699

 
$
(26,470
)
 
$
279,006

 
$
279,006