Reclassifications from Accumulated Other Comprehensive Loss - Change in Components (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 27, 2016	Aug. 29, 2015	Aug. 27, 2016	Aug. 29, 2015
Accumulated other comprehensive loss
Balance - beginning of period			$ 581,428
Balance - end of period	$ 616,669		616,669
Accumulated other comprehensive loss
Accumulated other comprehensive loss
Balance - beginning of period	(47,100)	$ (45,253)	(47,781)	$ (45,850)
Amounts reclassified from accumulated other comprehensive loss to net income, net of $451, $398, $902, and $796 tax expense	681	598	1,362	1,195
Balance - end of period	(46,419)	(44,655)	(46,419)	(44,655)
Defined benefit pension plans
Accumulated other comprehensive loss
Balance - beginning of period	(47,100)	(45,253)	(47,781)	(45,850)
Amounts reclassified from accumulated other comprehensive loss to net income, net of $451, $398, $902, and $796 tax expense	681	598	1,362	1,195
Balance - end of period	(46,419)	(44,655)	(46,419)	(44,655)
Amounts reclassified from accumulated other comprehensive loss to net (loss) income, tax expense	$ 451	$ 398	$ 902	$ 796