INVESTMENTS (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule of short-term investments [Line Items]
Cost	$ 856,000	$ 1,594,000
Fair Market Value	900,000	1,840,000
Unrealized Gain	44,000	246,000
Other-than-temporary investments impairment	0	0	2,026,000
Realized gains	257,000	956,000	23,000
Money Market Funds [Member]
Schedule of short-term investments [Line Items]
Cost	700,000	700,000
Equity Securities [Member]
Schedule of short-term investments [Line Items]
Cost	200,000	200,000
ERP Investments [Member]
Schedule of short-term investments [Line Items]
Cost	856,000	1,120,000
Fair Market Value	870,000	1,127,000
Unrealized Gain	14,000	7,000
Equity Investments With Unrealized Gains [Member]
Schedule of short-term investments [Line Items]
Cost	0	474,000
Fair Market Value	30,000	713,000
Unrealized Gain	30,000	239,000
Securities (Assets) [Member]
Schedule of short-term investments [Line Items]
Cost	$ 30,138	$ 700,000