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Investment Securities (Tables)
 12 Months Ended
Dec. 31, 2012
Investments, All Other Investments [Abstract]  
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]
The following table details the unrealized gains and losses on investment securities as of December 31, 2012. The Company did not have any such investments as of December 31, 2011 (amounts in thousands):
 
 
December 31, 2012
 
 
Cost
 
Gross Unrealized Gains
 
Gross Unrealized Losses
 
Fair Value
Investment securities
 
$
41,747

 
$
223

 
$
(316
)
 
$
41,654