Consolidated Statement of Shareholders' Equity (Unaudited) - 6 months ended Aug. 31, 2017 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance at Feb. 28, 2017	$ 529,639	$ 25,964	$ 37,739	$ 495,030	$ (29,094)
Balance (shares) at Feb. 28, 2017		25,964
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Compensation (shares)		16
Stock Compensation	3,400	$ 16	3,384
Restricted Stock Units (shares)		42
Restricted Stock Units	(1,198)	$ 42	(1,240)
Stock Issued for Stock Appreciation Rights Shares		1
Stock Issued For Stock Appreciation Rights	0	$ 1	(1)
Employee Stock Purchase Plan (shares)		35
Employee Stock Purchase Plan	1,632	$ 35	1,597
Treasury Stock, Shares, Retired		(97)
Treasury Stock, Retired, Par Value Method, Amount	(5,185)	$ 97	5,088
Cash Dividend Paid	(8,845)			(8,845)
Net Income	21,569
Foreign Currency Translation	4,328				4,328
Interest rate swap, net of $15 income tax	(27)				(27)
Balance at Aug. 31, 2017	$ 545,313	$ 25,961	$ 36,391	$ 507,754	$ (24,793)
Balance (shares) at Aug. 31, 2017		25,961