Consolidated Statement of Shareholders' Equity (Unaudited) - 3 months ended May 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	$ 533,136	$ 25,964	$ 37,739	$ 498,527	$ (29,094)
Balance (shares) at Feb. 28, 2017		25,964
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Compensation (shares)		0
Stock Compensation	1,194	$ 0	1,194
Restricted Stock Units (shares)		42
Restricted Stock Units	(1,198)	$ 42	(1,240)
Stock Issued for Stock Appreciation Rights Shares		0
Stock Issued For Stock Appreciation Rights	0	$ 0	0
Employee Stock Purchase Plan (shares)		35
Employee Stock Purchase Plan	1,632	$ 35	1,597
Treasury Stock, Shares, Retired		(47)
Treasury Stock, Retired, Par Value Method, Amount	(2,683)	$ (47)	(2,636)
Cash Dividend Paid	4,423			(4,423)
Net Income	12,062
Foreign Currency Translation	(997)				(997)
Interest rate swap, net of $7 income tax	(14)				(14)
Balance at May. 31, 2017	$ 538,709	$ 25,994	$ 36,654	$ 506,166	$ (30,105)
Balance (shares) at May. 31, 2017		25,994