For investments which are quantified by principal amount, the principle balance held at close of period.

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This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	12 Months Ended
	Feb. 28, 2014 item	Feb. 29, 2012	Feb. 28, 2013	Feb. 28, 2011
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Common shares, par value (in dollars per share)	$ 0.10		$ 0.10
Number of segments	3
Cash and cash equivalents
Cash equivalents	$ 1,550,000		$ 1,090,000
Trading securities and long-term marketable securities
Realized and unrealized net losses attributable to trading and long-term marketable security investments		697,000
Par value of liquidation of auction rate securities				$ 22,050,000