Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 28, 2015	Aug. 29, 2014	Aug. 28, 2015	Aug. 29, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ (24,403)
Other comprehensive income (loss) before reclassifications			30,343
Amounts reclassified from accumulated other comprehensive income (loss)			476
Other comprehensive (loss) income, net of tax	$ (11,979)	$ (1,984)	30,819	$ (141)
Ending Balance	6,416	$ 611	6,416	$ 611
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			1,836
Other comprehensive income (loss) before reclassifications			(4,379)
Other comprehensive (loss) income, net of tax			(4,379)
Ending Balance	(2,543)		(2,543)
Pensions and Other Postretirement Benefits [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(26,239)
Other comprehensive income (loss) before reclassifications			245
Amounts reclassified from accumulated other comprehensive income (loss)			476
Other comprehensive (loss) income, net of tax			721
Ending Balance	(25,518)		(25,518)
Unrealized Investment Gain [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications			34,477
Other comprehensive (loss) income, net of tax			34,477
Ending Balance	$ 34,477		$ 34,477