Consolidated Statement of Shareholders' Equity (Unaudited) (USD $)	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Balance at February 29, 2012 at Feb. 29, 2012	$ 287,608,765	$ 25,218,320	$ 14,200,811	$ 247,059,938	$ 1,303,974	$ (174,278)
Balance at February 29, 2012 (shares) at Feb. 29, 2012		25,218,320
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of Stock Options	15,781	7,488	8,293
Stock Compensation (shares)	7,488	14,000
Stock Compensation	2,816,827	14,000	2,802,827
Restricted Stock Units	(413,379)		(516,916)			103,537
Stock Issued for SARs, Shares		89,662
Stock Issued for SARs	(1,191,919)	89,662	(1,296,943)			15,362
Employee Stock Purchase Plan (shares)		47,497
Employee Stock Purchase Plan	917,253	47,497	814,377			55,379
Federal Income Tax Deducted on Stock Options and SARs	1,283,240		1,283,240
Cash Dividend Paid	(9,870,423)			(9,870,423)
Net Income	47,222,557			47,222,557
Foreign Currency Translation	(979,384)				(979,384)
Interest Rate Swap, Net of $21,903 Income Tax	(40,678)				(40,678)
Balance at November 30, 2012 at Nov. 30, 2012	$ 327,368,640	$ 25,376,967	$ 17,295,689	$ 284,412,072	$ 283,912	$ 0
Balance at November 30, 2012 (shares) at Nov. 30, 2012		25,376,967