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	22,327			22,327
Adjustment to pension, net of deferred tax	1,482				1,482
Dividends paid	(18,916)			(18,916)
Stock based compensation	2,444		2,444
Exercise of stock options and restricted stock			(1,717)			$ 1,717
Exercise of stock options and restricted stock, shares						98,188
Common stock repurchases	(1,942)					$ (1,942)
Common stock repurchases, shares						(102,757)
Ending balance at Nov. 30, 2021	305,944	$ 75,134	123,744	197,847	(18,800)	$ (71,981)
Ending balance common stock, shares at Nov. 30, 2021		30,053,443
Ending balance treasury stock, shares at Nov. 30, 2021						(4,108,199)
Beginning balance at Aug. 31, 2021	305,321	$ 75,134	123,116	196,809	(19,685)	$ (70,053)
Beginning balance common stock, shares at Aug. 31, 2021		30,053,443
Beginning balance, treasury stock, shares at Aug. 31, 2021						(4,006,268)
Net earnings	7,563			7,563
Adjustment to pension, net of deferred tax	885				885
Dividends paid	(6,525)			(6,525)
Stock based compensation	642		642
Exercise of stock options and restricted stock			(14)			$ 14
Exercise of stock options and restricted stock, shares						826
Common stock repurchases	(1,942)					$ (1,942)
Common stock repurchases, shares						(102,757)
Ending balance at Nov. 30, 2021	305,944	$ 75,134	123,744	197,847	(18,800)	$ (71,981)
Ending balance common stock, shares at Nov. 30, 2021		30,053,443
Ending balance treasury stock, shares at Nov. 30, 2021						(4,108,199)
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	$ 35,107			35,107
Adjustment to pension, net of deferred tax	1,501				1,501
Dividends paid	(19,380)			(19,380)
Stock based compensation	1,497		1,497
Exercise of stock options and restricted stock	0		(894)			$ 894
Exercise of stock options and restricted stock, shares						51,071
Common stock repurchases	$ (1,118)					$ (1,118)
Common stock repurchases, shares	(64,082)					(64,082)
Ending balance at Nov. 30, 2022	$ 321,422	$ 75,134	124,593	213,725	(17,086)	$ (74,944)
Ending balance common stock, shares at Nov. 30, 2022	30,053,443	30,053,443
Ending balance treasury stock, shares at Nov. 30, 2022						(4,266,835)
Beginning balance at Aug. 31, 2022	$ 315,316	$ 75,134	124,031	208,898	(17,803)	$ (74,944)
Beginning balance common stock, shares at Aug. 31, 2022		30,053,443
Beginning balance, treasury stock, shares at Aug. 31, 2022						(4,266,835)
Net earnings	11,286			11,286
Adjustment to pension, net of deferred tax	717				717
Dividends paid	(6,459)			(6,459)
Stock based compensation	$ 562		562
Common stock repurchases, shares	0
Ending balance at Nov. 30, 2022	$ 321,422	$ 75,134	$ 124,593	$ 213,725	$ (17,086)	$ (74,944)
Ending balance common stock, shares at Nov. 30, 2022	30,053,443	30,053,443
Ending balance treasury stock, shares at Nov. 30, 2022						(4,266,835)