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)	Treasury Stock	Treasury Stock Stock Appreciation Rights (SARs) [Member]
Balance at Feb. 28, 2013	$ 333,934,474		$ 25,376,967		$ 17,653,912		$ 294,092,945	$ (3,189,350)	$ 0
Balance (shares) at Feb. 28, 2013			25,376,967
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of Stock Options (shares)	0
Exercise of Stock Options	0		0		0
Stock Compensation (shares)			14,000
Stock Compensation	2,512,547		14,000		2,498,547
Restricted Stock Units (shares)			27,684
Restricted Stock Units	(565,527)		27,684		(593,211)				0
Stock Issued for SARs, Shares				52,625
Stock Issued for SARs		(865,489)		52,625		(918,114)				0
Employee Stock Purchase Plan (shares)			27,848
Employee Stock Purchase Plan	639,055		27,848		611,207				0
Federal Income Tax Deducted on Stock Options and SARs	1,188,234				1,188,234
Cash Dividend Paid	(7,134,272)						(7,134,272)
Net Income	30,909,552						30,909,552
Foreign Currency Translation	(2,265,837)							(2,265,837)
Interest Rate Swap, Net of $14,602 Income Tax	(27,119)							(27,119)
Balance at Aug. 31, 2013	$ 358,325,618		$ 25,499,124		$ 20,440,575		$ 317,868,225	$ (5,482,306)	$ 0
Balance (shares) at Aug. 31, 2013			25,499,124