Consolidated Statements of Changes in Shareholders' Equity and Comprehensive Income (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Balance at Feb. 28, 2009	$ 292,006	$ 75,134	$ 122,448	$ 186,857	$ (14,510)	$ (77,923)
Balance, shares at Feb. 28, 2009		30,053,443				(4,336,557)
Net earnings	35,206			35,206
Foreign currency translation, net of deferred tax of $754, $811 and $(436) for the period ending 28 february 2010, 28 february 2011 and 29 february 2012 respectively	1,283				1,283
Unrealized gain on derivative instruments, net of deferred tax benefit of $137, $434, $230 for the period ending 28 february 2010, 28 february 2011 and 29 february 2012 respectively	233				233
Adjustment to pension, net of deferred tax of $158, $1,429 and $(2,476) for the period ending 28 february 2010, 28 february 2011 and 29 february 2012 respectively	(269)				(269)
Comprehensive income	36,453
Dividends declared ($.62 per share)	(16,001)			(16,001)
Excess tax benefit of stock option exercises and restricted stock grants	101		101
Stock based compensation	1,079		1,079
Exercise of stock options and restricted stock grants	108		(1,650)			1,758
Exercise of stock options and restricted stock grants, shares						93,034
Stock repurchases	(486)					(486)
Stock repurchases, shares						(48,557)
Balance at Feb. 28, 2010	313,260	75,134	121,978	206,062	(13,263)	(76,651)
Balance, shares at Feb. 28, 2010		30,053,443				(4,292,080)
Net earnings	44,631			44,631
Foreign currency translation, net of deferred tax of $754, $811 and $(436) for the period ending 28 february 2010, 28 february 2011 and 29 february 2012 respectively	1,460				1,460
Unrealized gain on derivative instruments, net of deferred tax benefit of $137, $434, $230 for the period ending 28 february 2010, 28 february 2011 and 29 february 2012 respectively	782				782
Adjustment to pension, net of deferred tax of $158, $1,429 and $(2,476) for the period ending 28 february 2010, 28 february 2011 and 29 february 2012 respectively	2,573				2,573
Comprehensive income	49,446
Dividends declared ($.62 per share)	(16,057)			(16,057)
Excess tax benefit of stock option exercises and restricted stock grants	(49)		(49)
Stock based compensation	982		982
Exercise of stock options and restricted stock grants	103		(1,605)			1,708
Exercise of stock options and restricted stock grants, shares						94,604
Stock repurchases	(2)					(2)
Stock repurchases, shares						(91)
Balance at Feb. 28, 2011	347,683	75,134	121,306	234,636	(8,448)	(74,945)
Balance, shares at Feb. 28, 2011		30,053,443				(4,197,567)
Net earnings	31,358			31,358
Foreign currency translation, net of deferred tax of $754, $811 and $(436) for the period ending 28 february 2010, 28 february 2011 and 29 february 2012 respectively	(705)				(705)
Unrealized gain on derivative instruments, net of deferred tax benefit of $137, $434, $230 for the period ending 28 february 2010, 28 february 2011 and 29 february 2012 respectively	372				372
Adjustment to pension, net of deferred tax of $158, $1,429 and $(2,476) for the period ending 28 february 2010, 28 february 2011 and 29 february 2012 respectively	(4,004)				(4,004)
Comprehensive income	27,021
Dividends declared ($.62 per share)	(16,132)			(16,132)
Excess tax benefit of stock option exercises and restricted stock grants	63		63
Stock based compensation	1,025		1,025
Exercise of stock options and restricted stock grants	217		(1,004)			1,221
Exercise of stock options and restricted stock grants, shares						67,999
Stock repurchases	(2)					(2)
Stock repurchases, shares						(100)
Balance at Feb. 29, 2012	$ 359,875	$ 75,134	$ 121,390	$ 249,862	$ (12,785)	$ (73,726)
Balance, shares at Feb. 29, 2012		30,053,443				(4,129,668)