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Cash, Cash Equivalents, Short-Term and Long-Term Investments (Tables)
6 Months Ended
Jun. 30, 2014
Cash, Cash Equivalents, Short-Term and Long-Term Investments [Abstract]  
Schedule of Cash, Cash Equivalents and Short-term Investments [Table Text Block]

  As of 
June 30,
2014
  As of 
December 31, 
2013
  (Decrease)
Increase
 
Cash and cash equivalents $1,700,853  $2,270,385  $(569,532)
Short-term investments  2,985,000   2,985,000   -- 
Subtotal  4,685,853   5,255,385   (569,532)
Long-term investments  496,000   --   496,000 
Total $5,181,853  $5,255,385  $(73,532)