ACCUMULATED NET REALIZED GAINS (LOSSES) ON INVESTMENTS (Details) (USD $)	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
ACCUMULATED NET REALIZED GAINS (LOSSES) ON INVESTMENTS [Abstract]
Distributed net capital gains (in dollars per share)	$ 20.34	$ 17.59
Accumulated long term capital gains	$ 10,436,526		$ 498,438