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Investment in Available-for-Sale Securities (Tables)
 3 Months Ended
Mar. 31, 2014
Available-For-Sale Securities [Abstract]  
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]
The following is a summary of the Company’s investments in available-for-sale securities as of March 31, 2014 (unaudited):
 
 
 
Cost
 
Unrealized
Gains
 
Unrealized
Losses
 
Fair Value
 
U.S. federal agency securities
 
$
90,322
 
$
103
 
$
(258)
 
$
90,167
 
Municipal securities
 
 
660,444
 
 
2,107
 
 
-
 
 
662,551
 
Certificates of deposit
 
 
1,692,480
 
 
16,155
 
 
(19,456)
 
 
1,689,179
 
Corporate debt securities
 
 
72,677
 
 
379
 
 
(3,163)
 
 
69,893
 
 
 
$
2,515,923
 
$
18,744
 
$
(22,877)
 
$
2,511,790
 
 
The following is a summary of the Company’s investments in available-for-sale securities as of December 31, 2013:  
 
 
 
Cost
 
Unrealized
Gains
 
Unrealized
Losses
 
Fair Value
 
U.S. federal agency securities
 
$
90,549
 
$
93
 
$
(277)
 
$
90,365
 
Municipal securities
 
 
735,826
 
 
2,175
 
 
(6)
 
 
737,995
 
Certificates of deposit
 
 
1,539,377
 
 
12,281
 
 
(19,398)
 
 
1,532,260
 
Corporate debt securities
 
 
174,738
 
 
275
 
 
(9,091)
 
 
165,922
 
 
 
$
2,540,490
 
$
14,824
 
$
(28,772)
 
$
2,526,542
 
Available-for-sale Securities [Table Text Block]
The cost and fair value of investments in fixed income available-for-sale debt securities, by contractual maturity, as of March 31, 2014 (unaudited), are as follows:
 
 
 
Cost
 
Fair
Value
 
Due within one year
 
$
1,058,930
 
$
1,051,561
 
Due after one year through three years
 
 
748,657
 
 
757,623
 
Due after three years
 
 
708,336
 
 
702,606
 
 
 
$
2,515,923
 
$
2,511,790