Consolidated Statement of Shareholders' Equity (Unaudited) (USD $)	Total	Stock Appreciation Rights (SARs) [Member]	Common Stock	Common Stock Stock Appreciation Rights (SARs) [Member]	Capital in Excess of Par Value	Capital in Excess of Par Value Stock Appreciation Rights (SARs) [Member]	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance at Feb. 28, 2014	$ 375,913,262		$ 25,577,205		$ 21,954,777		$ 339,399,556	$ (11,018,276)
Balance (shares) at Feb. 28, 2014			25,577,205
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Compensation (shares)			16,000
Stock Compensation	3,342,071		16,000		3,326,071
Restricted Stock Units (shares)			14,031
Restricted Stock Units	(278,391)		14,031		(292,422)
Stock Issued for SARs, Shares				29,664
Stock Issued for SARs		(709,938)		29,664		(739,602)
Employee Stock Purchase Plan (shares)			77,973
Employee Stock Purchase Plan	2,374,646		77,973		2,296,673
Federal Income Tax Deducted on Stock Options and SARs	213,708				213,708
Cash Dividend Paid	(11,038,063)						(11,038,063)
Net Income	48,659,422						48,659,422
Foreign Currency Translation	(2,954,196)							(2,954,196)
Interest Rate Swap, Net of $21,903 Income Tax	(40,678)							(40,678)
Balance at Nov. 30, 2014	$ 415,481,843		$ 25,714,873		$ 26,759,205		$ 377,020,915	$ (14,013,150)
Balance (shares) at Nov. 30, 2014			25,714,873