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Investment Securities: (Tables)
6 Months Ended
Jun. 30, 2011
Investment Securities [Abstract]  
Available-for-sale Securities [Table Text Block]
The investment securities consist of the following at June 30, 2011 and December 31, 2010:

 
June 30, 2011
 
December 31, 2010
Federal tax-exempt debt securities
$
30,284

 
$
11,687

Certificates of deposit
3,160

 
2,820

 
$
33,444

 
$
14,507