Aggregate dividends paid during the period for each share of common stock outstanding.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The amount of net income (loss) from continuing operations per each basic and diluted share of common stock or unit when the per share amount is the same for both basic and diluted shares.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method.

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Earnings (loss) per Share - Computation for Basic and Diluted Earnings (loss) per Share (Detail) - $ / shares	3 Months Ended								12 Months Ended
	Feb. 28, 2017	Nov. 30, 2016	Aug. 31, 2016	May 31, 2016	Feb. 28, 2016	Nov. 30, 2015	Aug. 31, 2015	May 31, 2015	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2015
Earnings Per Share [Abstract]
Basic weighted average common shares outstanding									25,734,667	25,688,273	25,864,352
Effect of dilutive options									14,518	34,094
Diluted weighted average common shares outstanding									25,749,185	25,722,367	25,864,352
Earnings per share - basic and diluted
Earnings per share on continuing operations									$ 1.03	$ 1.25	$ 1.33
Earnings (loss) per share on discontinued operations									0.09	0.14	(3.05)
Loss per share on sale of discontinued operations									(1.05)
Earnings (loss) on discontinued operations									(0.96)	0.14	(3.05)
Net earnings (loss)									0.07	1.39	(1.72)
Cash dividends	$ 0.175	$ 0.175	$ 1.675	$ 0.175	$ 0.175	$ 0.175	$ 0.175	$ 0.175	$ 2.20	$ 0.70	$ 0.70