Income Taxes (Significant Items Comprising Deferred Tax Assets) (Details) (USD $)	Aug. 30, 2014		Aug. 31, 2013	Aug. 25, 2012
Income Tax Disclosure [Abstract]
Warranty reserves	$ 3,620,000		$ 3,191,000
Self-insurance reserve	1,882,000		1,704,000
Accrued vacation	1,805,000		1,810,000
Inventory	(1,682,000)		(1,078,000)
Deferred compensation	1,199,000		1,118,000
Other	2,817,000		997,000
Total current	9,641,000		7,742,000
Postretirement health care benefits	13,634,000		13,186,000
Deferred compensation	9,565,000		10,678,000
Tax credits & NOL carryforwards	261,000	[1]	2,070,000
Unrecognized tax benefit	895,000		1,206,000
Depreciation	(992,000)		(917,000)
Other	666,000		1,068,000
Total noncurrent	24,029,000		27,291,000
Total gross deferred tax assets	33,670,000		35,033,000
Valuation allowance	0		(1,642,000)
Total deferred tax assets	33,670,000		33,391,000	38,973,000
Deferred tax assets tax credit carryforwards other (percent)	2.20%
Deferred tax assets valuation allowance (percent)	(2.20%)
State NOL carryforward	261,000
Deferred tax assets, tax credit carryforwards, other	$ 1,400,000

[1] At August 30, 2014, NOL carryforwards included $261,000 of state NOLs that will begin to expire in Fiscal 2018. We have evaluated all the positive and negative evidence and consider it more likely than not that these carryforwards can be realized. Approximately $1.4 million of tax credits were written off as they expired in Fiscal 2014. As such, the valuation allowance associated with these tax credits was also removed during the year.