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Investment Securities Available for Sale (Tables)
12 Months Ended
Dec. 31, 2012
Available-for-sale Securities [Abstract]  
Available-for-sale Securities
The components of investment securities available for sale at December 31, 2012 and 2011 were as follows:

 
Cost
 
Gross
Unrealized
Gain
 
Gross
Unrealized
Loss
 
Fair
Value
2012
 

 
 

 
 

 
 

Marketable equity securities
$
48,097

 
$
23,621

 
$
(1,734
)
 
$
69,984

 
 
 
 
 
 
 
 
2011
 

 
 

 
 

 
 

Marketable equity securities
$
39,692

 
$
38,173

 
$
(1,379
)
 
$
76,486