Accumulated Other Comprehensive (Loss) Income - Changes in Accumulated Other Comprehensive (Loss) Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 26, 2016	Aug. 28, 2015	Aug. 26, 2016	Aug. 28, 2015
Accumulated Other Comprehensive (Loss) Income [Line Items]
Beginning Balance			$ 429,294
Other comprehensive (loss) income, net of tax	$ (3,673)	$ (11,979)	10,998	$ 30,819
Ending Balance	463,173	$ 436,665	463,173	$ 436,665
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Beginning Balance			(13,535)
Other comprehensive income (loss) before reclassifications			(5,660)
Amounts reclassified from accumulated other comprehensive income (loss)			318
Other comprehensive (loss) income, net of tax			(5,342)
Ending Balance	(18,877)		(18,877)
Pensions and Postretirement Benefits [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Beginning Balance			(26,628)
Other comprehensive income (loss) before reclassifications			(222)
Amounts reclassified from accumulated other comprehensive income (loss)			452
Other comprehensive (loss) income, net of tax			230
Ending Balance	(26,398)		(26,398)
Unrealized Investment Gain [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Beginning Balance			20,505
Other comprehensive income (loss) before reclassifications			16,110
Other comprehensive (loss) income, net of tax			16,110
Ending Balance	36,615		36,615
Accumulated Other Comprehensive (Loss) Income [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Beginning Balance			(19,658)
Other comprehensive income (loss) before reclassifications			10,228
Amounts reclassified from accumulated other comprehensive income (loss)			770
Other comprehensive (loss) income, net of tax			10,998
Ending Balance	$ (8,660)		$ (8,660)