Discontinued Operations - Additional Information (Detail) - USD ($)		12 Months Ended
	Mar. 26, 2014	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
Schedule Of Sale And Divestiture Of Business [Line Items]
Amount of net sales from discontinued operations		$ 6,747,000	$ 1,543,000
Lexel Imaging, Inc.
Schedule Of Sale And Divestiture Of Business [Line Items]
Divestiture of business	$ 3,900,000
Value of inventories guaranteed to purchase	$ 2,900,000
Purchase commitment period	5 years
Gain (loss) on sale of business				$ (4,400,000)
Collection period for receivable from divestiture of business	180 days
Amount of cash receivable from divestiture of business	$ 1,000,000
Amount of net sales from discontinued operations				7,600,000
Amount of pre-tax net income (loss) from discontinued operations				$ (800,000)