Unaudited Consolidated Statement of Changes in Shareholders' Equity - 9 months ended Nov. 30, 2018 - 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, 2018	$ 261,704	$ 75,134	$ 121,333	$ 164,177	$ (16,428)	$ (82,512)
Beginning balance common stock, shares at Feb. 28, 2018	30,053,443	30,053,443
Beginning balance, treasury stock, shares at Feb. 28, 2018						(4,789,228)
Net earnings	$ 29,233			29,233
Adjustment to pension, net of deferred tax of $252	755				755
Dividends paid ($0.65 per share)	(16,733)			(16,733)
Stock based compensation	1,036		1,036
Exercise of stock options and restricted stock	69		(1,528)			$ 1,597
Exercise of stock options and restricted stock, shares						110,139
Common stock issued for acquisition of business	16,218		1,874			$ 14,344
Common stock issued for acquisition of business, shares						829,126
Common stock repurchases	$ (4,560)					$ (4,560)
Common stock repurchases, shares	(234,823)					(234,823)
Ending balance at Nov. 30, 2018	$ 287,722	$ 75,134	$ 122,715	$ 176,677	$ (15,673)	$ (71,131)
Ending balance common stock, shares at Nov. 30, 2018	30,053,443	30,053,443
Ending balance treasury stock, shares at Nov. 30, 2018						(4,084,786)