CONDENSED CONSOLIDATED STATEMENTS of CASH FLOWS (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Mar. 27, 2020	Mar. 29, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 2,712	$ 1,742
Non-cash adjustments:
Stock-based compensation	337	298
Depreciation expense	1,587	1,290
Change in reserve for doubtful accounts	48	(39)
Inventory Write-down	1,296	89
Increase (Decrease) in Deferred Income Taxes	1,201	511
Amortization of Deferred Charges	(57)	(56)
Increase (Decrease) in Operating Capital [Abstract]
Accounts receivable	1,031	(2,615)
Unbilled contract revenue	(1,072)	(1,710)
Inventories	(2,055)	(8,547)
Federal income tax receivable	(517)	0
Other current assets	(267)	(53)
Other long-term assets	(116)	(253)
Accounts payable	(2,771)	(1,362)
Change in book overdraft position	(231)	(922)
Accrued expenses	(1,898)	220
Customer deposits	2,573	2,631
Net change in lease right-of-use assets and liabilities	(1)	0
Other long-term liabilities	0	(75)
Net cash flows provided by/(used in) operating activities	1,800	(8,851)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property, plant and equipment	(1,351)	(805)
Net cash flows used in investing activities	(1,351)	(805)
CASH FLOWS FROM FINANCING ACTIVITIES
Advances from revolving credit facility	36,680	39,307
Repayments of revolving credit facility	(36,763)	(29,388)
Borrowings under other loan agreements	0	391
Repayments under other loan agreements	(685)	(568)
Payments under finance lease	(182)	(152)
Proceeds received from lease financing obligation	415	0
Payments of Debt Issuance Costs	0	(6)
Proceeds from exercise of stock options	138	52
Proceeds from employee stock plan purchases	40	20
Cash paid for taxes upon vesting of restricted stock	(92)	0
Net cash flows (used in)/provided by financing activities	(449)	9,656
Net cash change for the period	0	0
Cash, end of period	0	0
Cash, beginning of period	0	0
Supplemental Cash Flow Information [Abstract]
Interest paid	779	753
Income taxes paid	$ 20	$ 0