Condensed Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]
Beginning balance at Feb. 28, 2021	$ 300,549	$ 75,134	$ 123,017	$ 194,436	$ (20,282)	$ (71,756)
Beginning balance common stock, shares at Feb. 28, 2021		30,053,443
Beginning balance, treasury stock, shares at Feb. 28, 2021						(4,103,630)
Net earnings	14,764			14,764
Adjustment to pension, net of deferred tax	597				597
Dividends paid	(12,391)			(12,391)
Stock based compensation	1,802		1,802
Exercise of stock options and restricted stock			(1,703)			$ 1,703
Exercise of stock options and restricted stock, shares						97,362
Ending balance at Aug. 31, 2021	305,321	$ 75,134	123,116	196,809	(19,685)	$ (70,053)
Ending balance common stock, shares at Aug. 31, 2021		30,053,443
Ending balance treasury stock, shares at Aug. 31, 2021						(4,006,268)
Beginning balance at May. 31, 2021	303,452	$ 75,134	122,746	195,874	(19,983)	$ (70,319)
Beginning balance common stock, shares at May. 31, 2021		30,053,443
Beginning balance, treasury stock, shares at May. 31, 2021						(4,021,466)
Net earnings	7,460			7,460
Adjustment to pension, net of deferred tax	298				298
Dividends paid	(6,525)			(6,525)
Stock based compensation	636		636
Exercise of stock options and restricted stock			(266)			$ 266
Exercise of stock options and restricted stock, shares						15,198
Ending balance at Aug. 31, 2021	305,321	$ 75,134	123,116	196,809	(19,685)	$ (70,053)
Ending balance common stock, shares at Aug. 31, 2021		30,053,443
Ending balance treasury stock, shares at Aug. 31, 2021						(4,006,268)
Beginning balance at Feb. 28, 2022	$ 303,815	$ 75,134	123,990	197,998	(18,587)	$ (74,720)
Beginning balance common stock, shares at Feb. 28, 2022	30,053,443	30,053,443
Beginning balance, treasury stock, shares at Feb. 28, 2022						(4,253,824)
Net earnings	$ 23,821			23,821
Adjustment to pension, net of deferred tax	784				784
Dividends paid	(12,921)			(12,921)
Stock based compensation	936		936
Exercise of stock options and restricted stock			(895)			$ 895
Exercise of stock options and restricted stock, shares						51,071
Common stock repurchases	$ (1,119)					$ (1,119)
Common stock repurchases, shares	(64,082)					(64,082)
Ending balance at Aug. 31, 2022	$ 315,316	$ 75,134	124,031	208,898	(17,803)	$ (74,944)
Ending balance common stock, shares at Aug. 31, 2022	30,053,443	30,053,443
Ending balance treasury stock, shares at Aug. 31, 2022						(4,266,835)
Beginning balance at May. 31, 2022	$ 308,627	$ 75,134	123,862	203,158	(18,283)	$ (75,244)
Beginning balance common stock, shares at May. 31, 2022		30,053,443
Beginning balance, treasury stock, shares at May. 31, 2022						(4,283,874)
Net earnings	12,194			12,194
Adjustment to pension, net of deferred tax	480				480
Dividends paid	(6,454)			(6,454)
Stock based compensation	469		469
Exercise of stock options and restricted stock			(300)			$ 300
Exercise of stock options and restricted stock, shares						17,039
Ending balance at Aug. 31, 2022	$ 315,316	$ 75,134	$ 124,031	$ 208,898	$ (17,803)	$ (74,944)
Ending balance common stock, shares at Aug. 31, 2022	30,053,443	30,053,443
Ending balance treasury stock, shares at Aug. 31, 2022						(4,266,835)