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SHARE-BASED COMPENSATION PLANS (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended										12 Months Ended				12 Months Ended	1 Months Ended					12 Months Ended				12 Months Ended			3 Months Ended		12 Months Ended
	Feb. 29, 2012 plan	Feb. 28, 2011	Feb. 28, 2010	Feb. 29, 2012 Stock options	Feb. 28, 2011 Stock options	Feb. 28, 2010 Stock options	Feb. 29, 2012 Restricted stock	Feb. 28, 2011 Restricted stock	Feb. 28, 2010 Restricted stock	Aug. 24, 2008 1998 Plan	Feb. 29, 2012 1998 Plan Stock options	Feb. 29, 2012 1998 Plan Stock options Minimum	Feb. 29, 2012 1998 Plan Stock options Maximum	Jun. 05, 2005 1995 Directors' Plan	Feb. 29, 2012 1995 Directors' Plan Stock options	Oct. 31, 2011 2008 Stock Incentive Plan	Sep. 30, 2011 2008 Stock Incentive Plan	Feb. 29, 2012 2008 Stock Incentive Plan	Oct. 11, 2011 2008 Stock Incentive Plan	Oct. 10, 2011 2008 Stock Incentive Plan	Feb. 29, 2012 2008 Stock Incentive Plan Stock options	Feb. 29, 2012 2008 Stock Incentive Plan Stock options Minimum	Feb. 29, 2012 2008 Stock Incentive Plan Stock options Maximum	Feb. 29, 2012 2008 Directors Plan	Feb. 29, 2012 2008 Directors Plan Restricted stock	Feb. 28, 2011 2008 Directors Plan Restricted stock	Feb. 28, 2010 2008 Directors Plan Restricted stock	Feb. 29, 2012 2008 Stock Purchase Plan	Aug. 31, 2011 2008 Stock Purchase Plan	Feb. 29, 2012 2008 Stock Purchase Plan	Feb. 28, 2011 2008 Stock Purchase Plan	Feb. 28, 2010 2008 Stock Purchase Plan
SHARE-BASED COMPENSATION PLANS
Number of expired share-based compensation plans	2
Number of active share-based compensation plans	3
Share-based compensation plans
Number of shares of common stock covered for issuance under share based compensation plan										6,750,000				980,000				3,750,000	3,750,000	750,000				175,000				350,000		350,000
Maximum withholding percentage of employee wages or salaries for the purchase of shares of common stock																												15.00%		15.00%
Purchase price for shares acquired under the plan as a percentage of the share's fair market value on either the first day of each option period or the last day of each period																												85.00%		85.00%
Shares of common stock acquired by plan participants																												20,482	21,386		24,601	28,782
Price of common stock acquired by plan participants (in dollars per share)																												$ 25.22	$ 23.16		$ 19.45	$ 12.04
Vesting period, low end of range (in years)											1 year										4 years
Vesting period (in years)											4 years				1 year
Vesting period, high end of range (in years)											5 years										5 years
Period from grant date to expiration (in years)												7 years	10 years		10 years							7 years	10 years
Options outstanding				871,000	2,510,000						305,950				32,000						533,233
Maximum number of shares with respect to which awards of any and all types may be granted during a calendar year to any participant																1,000,000	250,000
Number of shares available for future issue under the plan																		3,171,210						137,400				239,269		239,269
Cumulative number of shares granted under the plan																									37,600
Restricted stock disclosure
Number of awards granted (in shares)																									18,000	11,600	8,000
Fair values at the date of grant of awards granted (in dollars per share)																									$ 29.48	$ 22.26	$ 21.97
SHARE BASED PAYMENT EXPENSE
Share-based payment expense	$ 2,928	$ 2,017	$ 1,744	$ 2,061	$ 1,603	$ 1,403	$ 531	$ 258	$ 176																					$ 336	$ 156	$ 165
Less income tax benefits	(99)	(99)	(87)
Share-based payment expense, net of income tax benefits	$ 2,829	$ 1,918	$ 1,657
Earnings per share impact of share based payment expense:
Basic (in dollars per share)	$ 0.09	$ 0.06	$ 0.05
Diluted (in dollars per share)	$ 0.09	$ 0.06	$ 0.05

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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The highest quantity of shares an employee can purchase under the plan per period.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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