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FAIR VALUE (Details 2) (USD $)	0 Months Ended	12 Months Ended
	Sep. 15, 2011 ARS	Feb. 29, 2012 ARS	Feb. 28, 2013 Other Non-financial Assets	Feb. 29, 2012 Other Non-financial Assets
Fair value measurement on recurring basis using significant unobservable inputs (Level 3)
Beginning balances		$ 20,711,000
Total gains/income (losses/expense):
Fair value measurement on recurring basis using significant unobservable inputs (Level 3)		(626,000)
Included in other comprehensive income - unrealized		1,213,000
Sales at par		(3,250,000)
Sales at fair value		(18,048,000)
Fair value measurement on non-recurring basis using significant unobservable inputs (Level 3)
Beginning balances			829,500,000	660,947,000
Total gains (losses):
Included in net income - realized			(22,400,000)	(20,069,000)
Acquired during the period			778,000	178,676,000
Acquisition adjustments during the period			991,000	9,946,000
Ending balances			808,869,000	829,500,000
Par value of investments	18,800,000
Sale price of securities as a percentage of par value	96.00%
Total selling price, per agreement	18,050,000
Nonoperating pre-tax realized loss		750,000
Nonoperating pre-tax realized loss, tax effect		260,000
Investment liquidated at par		$ 3,250,000

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