Unaudited Consolidated Statement of Changes in Shareholders' Equity - 9 months ended Nov. 30, 2017 - 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, 2017	$ 251,355	$ 75,134	$ 121,525	$ 150,685	$ (15,261)	$ (80,728)
Beginning balance common stock, shares at Feb. 28, 2017	30,053,443	30,053,443
Beginning balance, treasury stock, shares at Feb. 28, 2017						(4,686,821)
Net earnings (loss)	$ 24,598			24,598
Adjustment to pension, net of deferred tax of $456	744				744
Dividends paid ($0.575 per share)	(14,635)			(14,635)
Stock based compensation	1,002		1,002
Exercise of stock options and restricted stock			(1,517)			$ 1,517
Exercise of stock options and restricted stock, shares						88,105
Common stock repurchases	$ (3,313)					$ (3,313)
Common stock repurchases, shares	(191,033)					(191,178)
Ending balance at Nov. 30, 2017	$ 259,751	$ 75,134	$ 121,010	$ 160,648	$ (14,517)	$ (82,524)
Ending balance common stock, shares at Nov. 30, 2017	30,053,443	30,053,443
Ending balance treasury stock, shares at Nov. 30, 2017						(4,789,894)