INVESTMENTS (Tables)

6 Months Ended

Jun. 30, 2013

INVESTMENTS [Abstract]

Held-to-maturity Securities

The following table summarizes information about held-to-maturity investments at June 30, 2013:

	Amortized Cost			Gross Unrealized Gains			Estimated Fair Value
U.S. government agency securities		$	502,362		$	4,338		$	506,700

Maturities of held-to-maturity investments

The maturities of held-to-maturity investments at June 30, 2013 were as follows:

	Less than 1 Year			Total
U.S. government agency securities		$	502,362		$	502,362