Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 27, 2015	Nov. 28, 2014	Nov. 27, 2015	Nov. 28, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ 329,326
Other comprehensive (loss) income, net of tax	$ (12,423)	$ (15,489)	18,396	$ (15,630)
Ending Balance	430,792	$ 365,503	430,792	$ 365,503
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			1,836
Other comprehensive income (loss) before reclassifications			(8,036)
Other comprehensive (loss) income, net of tax			(8,036)
Ending Balance	(6,200)		(6,200)
Pensions and Other Postretirement Benefits [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(26,239)
Other comprehensive income (loss) before reclassifications			301
Amounts reclassified from accumulated other comprehensive income (loss)			493
Other comprehensive (loss) income, net of tax			794
Ending Balance	(25,445)		(25,445)
Unrealized Investment Gain [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications			25,638
Other comprehensive (loss) income, net of tax			25,638
Ending Balance	25,638		25,638
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(24,403)
Other comprehensive income (loss) before reclassifications			17,903
Amounts reclassified from accumulated other comprehensive income (loss)			493
Other comprehensive (loss) income, net of tax			18,396
Ending Balance	$ (6,007)		$ (6,007)