Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Income (loss) from continuing operations	$ 15,619	$ (21,479)	$ (9,322)
Income (loss) from discontinued operations	(348)	95	(233)
Net income (loss)	15,271	(21,384)	(9,555)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	11,440	12,653	12,947
Provision (benefit) for deferred income taxes	(487)	(537)	8,181
Net loss (gain) on property, plant and equipment disposals	(25,281)	(1,047)	170
Impairment of assets	0	1,164	0
Impairment of goodwill and intangibles	0	5,545	0
Stock-based compensation (credit) expense	483	(29)	940
Bad debt expense	240	163	70
Changes in operating assets and liabilities:
Receivables	5,164	3,775	(2,945)
Inventories	9,686	8,462	(16,420)
Prepaids and other current assets	(975)	(535)	776
Accounts payable and accrued expenses	(3,678)	(4,198)	(3,161)
Other operating assets and liabilities	(176)	1,073	(609)
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	11,687	5,105	(9,606)
CASH FLOWS FROM INVESTING ACTIVITIES
Net proceeds from sales of property, plant and equipment	37,205	1,856	0
Purchase of property, plant and equipment	(4,235)	(4,052)	(12,724)
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	32,970	(2,196)	(12,724)
CASH FLOWS FROM FINANCING ACTIVITIES
Net borrowings (payments) on revolving credit facility	(39,524)	1,512	27,125
Payments on notes payable - buildings	(5,475)	(731)	(731)
Payments on notes payable related to acquisitions	0	(791)	(1,920)
Borrowings on notes payable - equipment and other	1,379	3,273	7,612
Payments on notes payable - equipment and other	(3,375)	(4,260)	(4,145)
Borrowings on finance leases	11,500	0	0
Payments on finance leases	(4,166)	(4,617)	(3,921)
Change in outstanding checks in excess of cash	(3,141)	2,762	(1,695)
Repurchases of Common Stock	(827)	(58)	(116)
Payments for debt issuance costs	(277)	0	0
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(43,906)	(2,910)	22,209
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	751	(1)	(121)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	18	19	140
CASH AND CASH EQUIVALENTS AT END OF PERIOD	769	18	19
SUPPLEMENTAL CASH FLOW INFORMATION:
Right-of-use assets obtained in exchange for new finance lease liabilities	52	0	0
Equipment purchased under capital leases	0	223	621
Equipment purchased under notes payable	0	0	59
Right-of-use assets obtained in exchange for new operating lease liabilities	18,167	0	0
Accrued purchases of equipment	$ 188	$ 166	$ 179