Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands		6 Months Ended
		Jun. 26, 2021	Jun. 27, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Income (loss) from continuing operations		$ 1,442	$ (9,592)
Loss from discontinued operations		(121)	(157)
Net income (loss)		1,321	(9,749)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization		5,130	5,595
Provision for deferred income taxes		(128)	0
Net gain on property, plant and equipment disposals		0	(37)
Stock-based compensation expense		204	173
Bad debt expense		411	69
Changes in operating assets and liabilities:
Receivables		(14,165)	5,062
Inventories		(5,985)	5,550
Prepaids and other current assets		2,733	(594)
Accounts payable and accrued expenses		14,601	4,572
Other operating assets and liabilities		(890)	400
NET CASH PROVIDED BY OPERATING ACTIVITIES		3,232	11,041
CASH FLOWS FROM INVESTING ACTIVITIES
Net proceeds from sales of property, plant and equipment		0	40
Purchase of property, plant and equipment		(1,990)	(979)
NET CASH USED IN INVESTING ACTIVITIES		(1,990)	(939)
CASH FLOWS FROM FINANCING ACTIVITIES
Net (payments) borrowings on revolving credit facility		3,132	(9,841)
Payments on notes payable - buildings and other term loans		(294)	(139)
Payments on notes payable - equipment and other		(1,669)	(1,201)
Payments on finance leases		(1,480)	(1,747)
Borrowings on finance leases		0	2,220
Change in outstanding checks in excess of cash		(396)	427
Repurchases of Common Stock		(57)	(207)
NET CASH USED IN FINANCING ACTIVITIES		(764)	(10,488)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS		478	(386)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD		1,920	769
CASH AND CASH EQUIVALENTS AT END OF PERIOD		2,398	383
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid		1,372	1,738
Interest paid for financing leases	[1]	770	691
Income taxes paid, net of tax refunds		80	(108)
Right-of-use assets obtained in exchange for new operating lease liabilities		0	626
Equipment purchased under notes payable		0	1,314
Accrued purchases of equipment		$ 174	$ 205

[1] Includes leases classified as failed sale-leaseback transactions.