CONDENSED CONSOLIDATED STATEMENTS of CASH FLOWS (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Jun. 26, 2020	Jun. 28, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 4,826	$ 2,953
Non-cash adjustments:
Stock-based compensation	526	415
Depreciation expense	2,442	2,047
Change in reserve for doubtful accounts	94	(30)
Inventory Write-down	1,226	19
Increase (Decrease) in Deferred Income Taxes	1,751	732
Amortization of Deferred Charges	(86)	(85)
Increase (Decrease) in Operating Capital [Abstract]
Accounts receivable	(2,796)	(1,414)
Unbilled contract revenue	(988)	(2,972)
Inventories	(3,818)	(14,485)
Federal income tax receivable	(517)	0
Other current assets	68	(146)
Other long-term assets	(330)	(436)
Accounts payable	(1,188)	1,293
Change in book overdraft position	(107)	(602)
Accrued expenses	(557)	1,389
Customer deposits	7,210	2,155
Other long-term liabilities	0	(75)
Net cash flows provided by/(used in) operating activities	7,756	(9,242)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property, plant and equipment	(3,067)	(1,119)
Proceeds from disposal of property, plant and equipment	0	20
Net cash flows used in investing activities	(3,067)	(1,099)
CASH FLOWS FROM FINANCING ACTIVITIES
Advances from revolving credit facility	55,523	57,343
Repayments of revolving credit facility	(56,505)	(46,331)
Borrowings under other loan agreements	0	391
Repayments under other loan agreements	(3,904)	(889)
Payments under finance lease	(284)	(230)
Proceeds received from lease financing obligation	415	0
Payments of Debt Issuance Costs	(84)	(27)
Proceeds from exercise of stock options	161	79
Proceeds from employee stock plan purchases	87	53
Cash paid for taxes upon vesting of restricted stock	(98)	(48)
Net cash flows (used in)/provided by financing activities	(4,689)	10,341
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	1,094	1,183
Income taxes paid	$ 20	$ 3