Consolidated Statement of Shareholders' Equity (Unaudited) - 6 months ended Aug. 31, 2018 - 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, 2018	$ 565,203	$ 25,959	$ 38,446	$ 526,018	$ (25,220)
Balance (shares) at Feb. 28, 2018		25,959
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Compensation (shares)		15
Stock Compensation	3,659	$ 15	3,644
Restricted Stock Units (shares)		30
Restricted Stock Units	(533)	$ 30	(563)
Stock Issued for Stock Appreciation Rights Shares		9
Stock Issued For Stock Appreciation Rights	(21)	$ 9	(30)
Employee Stock Purchase Plan (shares)		37
Employee Stock Purchase Plan	1,327	$ 37	1,290
Cash Dividend Paid	(8,844)			(8,844)
Net income	26,962			26,962
Foreign Currency Translation	(1,801)				(1,801)
Interest rate swap	(27)				(27)
Balance at Aug. 31, 2018	$ 585,925	$ 26,050	$ 42,787	$ 544,136	$ (27,048)
Balance (shares) at Aug. 31, 2018		26,050