CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 27, 2020	Mar. 29, 2019	Mar. 27, 2020	Mar. 29, 2019
Income Statement [Abstract]
Net sales	$ 44,171	$ 37,294	$ 88,905	$ 72,735
Cost of sales	38,668	32,708	78,163	63,090
Gross profit	5,503	4,586	10,742	9,645
Selling and administrative expenses	3,217	3,328	6,516	6,680
Operating income	2,286	1,258	4,226	2,965
Interest and financing expense	396	385	811	708
Income before income taxes	1,890	873	3,415	2,257
Income tax expense	367	203	703	515
Net Income (Loss) Attributable to Parent, Diluted		670	2,712	1,742
Net income/(loss)	$ 1,523	$ 670	$ 2,712	$ 1,742
Weighted average number of shares outstanding:
Basic (in shares)	10,393,461	10,286,876	10,379,846	10,274,772
Diluted (in shares)	10,703,112	10,678,058	10,666,001	10,574,076
Basic net income (loss) per share (in usd per share)	$ 0.15	$ 0.06	$ 0.26	$ 0.17
Diluted net income (loss) per share (in usd per share)	$ 0.14	$ 0.06	$ 0.25	$ 0.16