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INVESTMENT SECURITIES (Tables)
 6 Months Ended
Jun. 30, 2014
Investments, Debt and Equity Securities [Abstract]  
Held-to-maturity Securities [Table Text Block]
The following tables summarize our investment securities at June 30, 2014 and December 31, 2013:
 
 
 
June 30, 2014
 
 
 
Amortized cost,
as adjusted
 
Gross
unrealized
holding gains
 
Gross
unrealized
holding losses
 
Estimated
fair value
 
Short-term investments:
 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations of domestic governmental agencies (maturing between January 2015 and June 2015) (held-to-maturity)
 
$
7,959,652
 
$
3,533
 
$
156
 
$
7,963,029
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Long-term investments:
 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations of domestic governmental agencies (maturing between July 2015 and September 2015) (held-to-maturity)
 
$
6,110,309
 
$
368
 
$
1,017
 
$
6,109,660
 
 
 
 
December 31, 2013
 
 
 
Amortized cost,
as adjusted
 
Gross
unrealized
holding gains
 
Gross
unrealized
holding losses
 
Estimated
fair value
 
Long-term investments:
 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations of domestic governmental agencies (maturing between January 2015 and April 2015) (held-to-maturity)
 
$
4,918,897
 
$
—
 
$
650
 
$
4,918,247