Condensed Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Feb. 26, 2017	Feb. 28, 2016	Feb. 26, 2017	Feb. 28, 2016
Income Statement [Abstract]
Net sales	$ 6,313,586	$ 8,488,313	$ 12,643,527	$ 18,219,720
Cost of products sold	6,107,015	7,841,786	12,129,072	16,685,188
Gross margin	206,571	646,527	514,455	1,534,532
Selling and administrative expense	720,966	715,937	1,482,144	1,420,521
Interest and other income	(1,167)	(2,503)	(3,257)	(3,938)
Interest expense	66,457	78,533	134,126	160,737
Loss before income taxes	(579,685)	(145,440)	(1,098,558)	(42,788)
Income tax benefit	(217,492)	(151,177)	(414,003)	(180,863)
Net income (loss)	$ (362,193)	$ 5,737	$ (684,555)	$ 138,075
Basic earnings (loss) per share	$ (.12)		$ (0.23)	$ 0.05
Diluted earnings (loss) per share	(.12)		(0.23)	0.05
Cash dividend per share		$ 0.04		$ 0.08
Weighted average number of common shares outstanding, basic	2,919,500	2,919,500	2,919,500	2,919,500
Weighted average number of common shares outstanding, diluted	2,919,500	2,930,297	2,919,500	2,931,204