NOTES PAYABLE (Detail Textuals) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Oct. 31, 2008
Notes Payable [Abstract]
Margin loan agreement with financial institution			$ 2,900,000
Maximum amount borrowed under margin loan agreement facility			1,700,000
Amount outstanding under margin loan agreement facility	1,700,000	1,700,000
Amount collateralized under auction rate securities	2,100,000	2,100,000
Interest expense	$ 4,000	$ 6,000