Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	May. 29, 2015	May. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (24,403)
Other comprehensive income (loss) before reclassifications	42,560
Amounts reclassified from accumulated other comprehensive income (loss)	238
Other comprehensive income (loss), net of tax	42,798	$ 1,843
Ending Balance	18,395	$ 2,595
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	1,836
Other comprehensive income (loss) before reclassifications	(2,028)
Other comprehensive income (loss), net of tax	(2,028)
Ending Balance	(192)
Pensions and Other Postretirement Benefits [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(26,239)
Other comprehensive income (loss) before reclassifications	(22)
Amounts reclassified from accumulated other comprehensive income (loss)	238
Other comprehensive income (loss), net of tax	216
Ending Balance	(26,023)
Unrealized Investment Gain [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications	44,610
Other comprehensive income (loss), net of tax	44,610
Ending Balance	$ 44,610