Consolidated Statements of Operations and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May. 30, 2015	May. 31, 2014	May. 30, 2015	May. 31, 2014
Amortization of prior service credit, tax	$ 556	$ 557	$ 1,554	$ 1,567
Amortization of net actuarial loss, tax	154	103	412	304
Plan amendment, tax	0	0	581	1,346
Unrealized appreciation of investments, tax	$ 0	$ 0	$ 0	$ 91