CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Income Statement [Abstract]
Net sales	$ 40,324	$ 29,782	$ 113,059	$ 82,706
Cost of sales	34,719	26,423	97,808	73,045
Gross profit	5,605	3,359	15,251	9,661
Selling and administrative expenses	3,721	2,833	10,402	8,543
Operating income	1,884	526	4,849	1,118
Interest and financing expense	452	322	1,160	834
Income before income taxes	1,432	204	3,689	284
Income tax expense/(benefit)	221	0	736	(1,005)
Net Income (Loss) Attributable to Parent, Diluted		204	2,953	1,289
Net income/(loss)	$ 1,211	$ 204	$ 2,953	$ 1,289
Weighted average number of shares outstanding:
Basic (in shares)	10,332,548	10,243,286	10,294,173	10,221,869
Diluted (in shares)	10,642,403	10,556,764	10,556,953	10,467,112
Basic net income (loss) per share (in usd per share)	$ 0.12	$ 0.02	$ 0.28	$ 0.12
Diluted net income (loss) per share (in usd per share)	$ 0.11	$ 0.02	$ 0.28	$ 0.12