Consolidated Statement of Shareholders' Equity - CY Statement - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance (shares) at Feb. 28, 2018		25,959
Balance at Feb. 28, 2018	$ 565,203	$ 25,959	$ 38,446	$ 526,018	$ (25,220)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Compensation (shares)		0
Restricted Stock Units (shares)		30
Stock Compensation	1,358	$ 0	1,358
Restricted Stock Units	(519)	30	(549)
Stock Issued For Stock Appreciation Rights	1	$ 1	0
Employee Stock Purchase Plan (shares)		37
Stock Issued for Stock Appreciation Rights Shares		1
Employee Stock Purchase Plan	1,327	$ 37	1,290
Cash Dividend Paid	(4,418)			(4,418)
Net income	15,718			15,718
Foreign Currency Translation	(2,256)				(2,256)
Interest rate swap	(14)				(14)
Balance (shares) at May. 31, 2018		26,027
Balance at May. 31, 2018	577,116	$ 26,027	40,545	538,034	(27,490)
Balance (shares) at Feb. 28, 2019		26,115
Balance at Feb. 28, 2019	603,728	$ 26,115	46,141	560,224	(28,752)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Compensation (shares)		0
Restricted Stock Units (shares)		37
Stock Compensation	1,350	$ 0	1,350
Restricted Stock Units	(691)	$ 37	(728)
Cash Dividend Paid	(4,440)			(4,440)
Net income	21,284			21,284
Foreign Currency Translation	(1,960)				(1,960)
Interest rate swap	(14)				(14)
Balance (shares) at May. 31, 2019		26,152
Balance at May. 31, 2019	$ 619,257	$ 26,152	$ 46,763	$ 577,068	$ (30,726)