Consolidated Statements of Income - USD ($)	12 Months Ended
	Aug. 27, 2017	Aug. 28, 2016	Aug. 30, 2015
Income Statement [Abstract]
Net sales (Note 8)	$ 30,641,082	$ 35,215,984	$ 42,982,937
Cost of products sold	28,195,168	32,291,726	38,658,881
Gross margin	2,445,914	2,924,258	4,324,056
Selling and administrative expense	3,345,802	3,011,651	2,971,576
Equipment impairment loss	147,502
Interest and other income	(18,555)	(21,606)	(5,601)
Interest expense	275,494	308,461	346,297
Total expense	3,750,243	3,298,506	3,312,272
Income (loss) before income taxes	(1,304,329)	(374,248)	1,011,784
Income tax expense (benefit) (Note 6)	(490,032)	(547,296)	14,716
Net income (loss)	$ (814,297)	$ 173,048	$ 997,068
Basic earnings (loss) per share	$ (0.28)	$ 0.06	$ 0.34
Diluted earnings (loss) per share	(0.28)	0.06	0.34
Cash dividend per share		$ 0.08	$ 0.16
Weighted average number of common shares outstanding, basic	2,930,580	2,919,500	2,910,426
Weighted average number of common shares outstanding, diluted	2,930,580	2,928,126	2,960,398