Summarized Financial Information For Discontinued Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
	May 31, 2016	May 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	$ 1,850	$ 1,095
Cost of goods sold	1,466	1,084
Gross profit	384	11
Operating expenses
Selling and delivery	18
General and administrative	190	239
Total operating expenses	208	239
Operating profit from discontinued operations	176	(228)
Other income	181	29
Income (loss) from discontinued operations before income taxes	357	(199)
Income tax expense	10
Income (loss) from discontinued operations	$ 347	$ (199)