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Investments in Equity Securities (Tables) (Equity Securities [Member])
9 Months Ended
Sep. 30, 2013
Equity Securities [Member]
 
Schedule of Available-for-sale Securities [Line Items]  
Schedule of Investments in Equity Securities
At September 30, 2013 and December 31, 2012, investments in equity securities were as follows:
 
(In thousands)
Cost
 
Gross Unrealized
 
Fair
Value
 
Carrying
Value
Gains
 
Losses
 
September 30, 2013
 
 
 
 
 
 
 
 
 
Common stocks
$
195,705

 
$
48,413

 
$
(5,576
)
 
$
238,542

 
$
238,542

Preferred stocks
80,969

 
27,032

 
(7,636
)
 
100,365

 
100,365

Total
$
276,674

 
$
75,445

 
$
(13,212
)
 
$
338,907

 
$
338,907

December 31, 2012
 
 
 
 
 
 
 
 
 
Common stocks
$
222,671

 
$
60,102

 
$
(707
)
 
$
282,066

 
$
282,066

Preferred stocks
85,504

 
10,103

 
(1,651
)
 
93,956

 
93,956

Total
$
308,175

 
$
70,205

 
$
(2,358
)
 
$
376,022

 
$
376,022