INVESTMENT SECURITIES (Tables)

9 Months Ended

Sep. 30, 2014

Investments, Debt and Equity Securities [Abstract]

Held-to-maturity Securities [Table Text Block]

The following tables summarize our investment securities at September 30, 2014 and December 31, 2013:

	September 30, 2014
			Gross		Gross
	Amortized cost,		unrealized		unrealized		Estimated fair
	as adjusted		holding gains		holding losses		value
Short-term investments:
Obligations of domestic governmental agencies (maturing between January 2015 and September 2015) (held-to-maturity)	$	14,009,644	$	5,827	$	—	$	14,015,471

	December 31, 2013
			Gross		Gross
	Amortized cost,		unrealized		unrealized		Estimated fair
	as adjusted		holding gains		holding losses		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