Summarized Financial Information For Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012
Discontinued Operations [Line Items]
Cost of goods sold	$ 5,649	$ 4,089	$ 16,080	$ 12,032
Gross profit	130	454	1,074	1,542
Operating expenses
Selling and delivery	371	588	1,225	1,655
General and administrative	989	823	2,617	2,681
Operating Expenses	1,360	1,411	3,842	4,336
Operating profit from discontinued operations	(1,230)	(957)	(2,768)	(2,794)
Other income (expense)
Interest expense	(23)	(163)	(709)	(516)
Other, net	125	85	658	245
Nonoperating Income (Expense)	102	(78)	(51)	(271)
Income tax expense	(316)	(399)	(904)	(1,154)
Income from discontinued operations	196	784	2,563	2,361
Gain on sale of assets, net of tax			1,929
Income from discontinued operations, net of tax			634	2,361
Discontinued Operations
Discontinued Operations [Line Items]
Net sales	2,381	8,071	15,001	23,979
Cost of goods sold	1,515	5,243	9,962	15,127
Gross profit	866	2,828	5,039	8,852
Operating expenses
Selling and delivery	72	719	1,572	2,467
General and administrative	498	925	2,502	2,903
Operating Expenses	570	1,644	4,074	5,370
Operating profit from discontinued operations	296	1,184	965	3,482
Other income (expense)
Interest expense		(4)	(7)	(12)
Other, net		7	2	107
Gain on sale of assets			2,923
Nonoperating Income (Expense)		3	2,918	95
Income from discontinued operations before income taxes	296	1,187	3,883	3,577
Income tax expense	100	403	1,320	1,216
Income from discontinued operations	196	784	2,563	2,361
Gain on sale of assets, net of tax			1,929
Income from discontinued operations, net of tax	$ 196	$ 784	$ 634	$ 2,361