Unaudited Consolidated Statements of Changes in Shareholders' Equity - 6 months ended Aug. 31, 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)	$ 16,324			16,324
Adjustment to pension, net of deferred tax of $304	496				496
Dividends paid ($0.375 per share)	(9,552)			(9,552)
Stock based compensation	667		667
Exercise of stock options and restricted stock			(1,517)			$ 1,517
Exercise of stock options and restricted stock, shares						88,105
Stock repurchases	$ (3,310)					$ (3,310)
Stock repurchases, shares	(191,033)					(191,033)
Ending balance at Aug. 31, 2017	$ 255,980	$ 75,134	$ 120,675	$ 157,457	$ (14,765)	$ (82,521)
Ending balance common stock, shares at Aug. 31, 2017	30,053,443	30,053,443
Ending balance treasury stock, shares at Aug. 31, 2017						(4,789,749)