Condensed Consolidated Statement of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Preferred Stock Series A Preferred Stock	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss
Balance (shares) at Feb. 28, 2021			25,108
Balance at Feb. 28, 2021	$ 623,292		$ 25,108	$ 75,979	$ 547,289	$ (25,084)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	6,542			6,542
Common stock issued under stock-based plans and related income tax expense (shares)			108
Common stock issued under stock-based plans and related income tax expense	(2,169)		$ 108	(2,277)
Common stock issued under employee stock purchase plan (shares)			41
Common stock issued under employee stock purchase plan	1,544		$ 41	1,503
Repurchase and retirement of treasury shares (shares)			(564)
Repurchase and retirement of treasury shares	(28,869)		$ (564)		(28,305)
Cash dividends paid	(12,673)				(12,673)
Net income (loss) available to common shareholders	62,400				62,400
Foreign currency translation	(2,023)				(70)
Reclassification of foreign currency translation adjustment from accumulated other comprehensive loss to loss on sale of discontinued operations	0
Interest rate swap	0
Balance (shares) at Nov. 30, 2021			24,693
Balance at Nov. 30, 2021	648,044		$ 24,693	81,747	568,641	(27,037)
Balance (shares) at Aug. 31, 2021			24,840
Balance at Aug. 31, 2021	638,426		$ 24,840	79,908	559,207	(25,529)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	1,860			1,860
Common stock issued under stock-based plans and related income tax expense (shares)			1
Common stock issued under stock-based plans and related income tax expense	(20)		$ 1	(21)
Repurchase and retirement of treasury shares (shares)			(148)
Repurchase and retirement of treasury shares	(7,636)		$ (148)		(7,488)
Cash dividends paid	(4,163)				(4,163)
Net income (loss) available to common shareholders	21,085				21,085
Foreign currency translation	(1,508)				0
Reclassification of foreign currency translation adjustment from accumulated other comprehensive loss to loss on sale of discontinued operations	0
Interest rate swap	0
Balance (shares) at Nov. 30, 2021			24,693
Balance at Nov. 30, 2021	648,044		$ 24,693	81,747	568,641	(27,037)
Balance (shares) at Feb. 28, 2022		0	24,688
Balance at Feb. 28, 2022	667,365	$ 0	$ 24,688	85,847	584,154	(27,324)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	7,118			7,118
Issuance of Series A convertible preferred stock in exchange for convertible debt, shares (in shares)		240
Issuance of Class A convertible preferred stock in exchange for convertible debt	233,722	$ 240		233,482
Common stock issued under stock-based plans and related income tax expense (shares)			136
Common stock issued under stock-based plans and related income tax expense	(2,592)		$ 136	(2,728)
Common stock issued under employee stock purchase plan (shares)			52
Common stock issued under employee stock purchase plan	1,766		$ 52	1,714
Accrued dividends on preferred stock	(4,640)				(4,640)
Cash dividends paid	(12,664)				(12,664)
Net income (loss) available to common shareholders	(54,035)				(54,035)
Foreign currency translation	(7,765)				0	(7,765)
Reclassification of foreign currency translation adjustment from accumulated other comprehensive loss to loss on sale of discontinued operations	27,750					27,750
Interest rate swap	(3,512)
Balance (shares) at Nov. 30, 2022		240	24,876
Balance at Nov. 30, 2022	852,513	$ 240	$ 24,876	325,433	512,815	(10,851)
Balance (shares) at Aug. 31, 2022		240	24,862
Balance at Aug. 31, 2022	859,621	$ 240	$ 24,862	323,386	541,203	(30,070)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	2,348			2,348
Common stock issued under stock-based plans and related income tax expense (shares)			14
Common stock issued under stock-based plans and related income tax expense	(287)		$ 14	(301)
Accrued dividends on preferred stock	(3,600)				(3,600)
Cash dividends paid	(4,246)				(4,246)
Net income (loss) available to common shareholders	(20,542)				(20,542)
Foreign currency translation	(5,019)					(5,019)
Reclassification of foreign currency translation adjustment from accumulated other comprehensive loss to loss on sale of discontinued operations	27,750					27,750
Interest rate swap	(3,512)					(3,512)
Balance (shares) at Nov. 30, 2022		240	24,876
Balance at Nov. 30, 2022	$ 852,513	$ 240	$ 24,876	$ 325,433	$ 512,815	$ (10,851)