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Investments in Equity Securities
 3 Months Ended
Mar. 31, 2019
Equity securities  
Debt Securities, Available-for-sale [Line Items]  
Investments in Equity Securities Investments in Equity Securities
At March 31, 2019 and December 31, 2018, investments in equity securities were as follows:
 
(In thousands)
Cost
 
Gross Unrealized
 
Fair
Value
 
Carrying
Value
Gains
 
Losses
 
March 31, 2019
 
 
 
 
 
 
 
 
 
Common stocks
$
148,242

 
$
7,052

 
$
(19,195
)
 
$
136,099

 
$
136,099

Preferred stocks
101,432

 
110,879

 
(6,429
)
 
205,882

 
205,882

Total
$
249,674

 
$
117,931

 
$
(25,624
)
 
$
341,981

 
$
341,981

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