Shareholders' Equity - Changes in Shareholders' Equity (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		97 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning Balance, Amount			$ 298,546
Beginning Balance, Shares			30,053,443
Net loss	$ 5,740	$ 10,674	$ (4,354)	$ 30,891
Foreign currency translation, net of deferred tax of $6,087		$ 223	9,940	$ (3,052)
Dividends paid ($2.025 per share)			(52,724)
Stock based compensation			1,019
Stock based compensation allocated to loss on sale of discontinued operations			112
Exercise of stock options and restricted stock			2,910
Stock repurchases			$ (7,757)
Stock repurchases, shares			(491,057)		(1,209,568)
Ending Balance, Amount	$ 247,692		$ 247,692		$ 247,692
Ending Balance, Shares	30,053,443		30,053,443		30,053,443
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning Balance, Amount			$ 75,134
Beginning Balance, Shares			30,053,443
Ending Balance, Amount	$ 75,134		$ 75,134		$ 75,134
Ending Balance, Shares	30,053,443		30,053,443		30,053,443
Additional Paid-in Capital [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning Balance, Amount			$ 121,597
Stock based compensation			1,019
Stock based compensation allocated to loss on sale of discontinued operations			112
Exercise of stock options and restricted stock			(1,810)
Ending Balance, Amount	$ 120,918		120,918		$ 120,918
Retained Earnings [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning Balance, Amount			206,105
Net loss			(4,354)
Dividends paid ($2.025 per share)			(52,724)
Ending Balance, Amount	149,027		149,027		149,027
Accumulated Other Comprehensive Income (Loss) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning Balance, Amount			(27,285)
Foreign currency translation, net of deferred tax of $6,087			9,940
Ending Balance, Amount	(17,345)		(17,345)		(17,345)
Treasury Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning Balance, Amount			$ (77,005)
Beginning Balance, Treasury Stock, Shares			(4,437,005)
Exercise of stock options and restricted stock			$ 4,720
Exercise of stock options and restricted stock, shares			282,988
Stock repurchases			$ (7,757)
Stock repurchases, shares			(491,169)
Ending Balance, Amount	$ (80,042)		$ (80,042)		$ (80,042)
Ending Balance, Treasury Stock, Shares	(4,645,186)		(4,645,186)		(4,645,186)