Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
OPERATING ACTIVITIES:
Net loss	$ (8,052,000)	$ (2,509,000)
Loss from discontinued operations	(8,000)	(107,000)
Net loss from continuing operations	(8,044,000)	(2,402,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	5,215,000	5,282,000
(Gain) loss on disposal of equipment	(124,000)	47,000
Impairment loss	128,000	733,000
Board compensation issued in equity	311,000	0
Stock-based compensation	130,000	392,000
Amortization of debt issuance costs and discount	9,000	131,000
Income tax expense	273,000	0
Gain on restructuring of senior revolving credit facility	0	(11,916,000)
Gain on forgiveness of PPP loan (Note 5)	(1,964,000)	0
Gain on early termination of finance leases	0	(3,000)
Interest paid-in-kind on line of credit	0	326,000
Bad debt expense	268,000	140,000
Changes in operating assets and liabilities:
Accounts receivable	(1,380,000)	4,551,000
Inventories	(51,000)	103,000
Prepaid expenses and other current assets	(1,117,000)	157,000
Income taxes receivable	0	43,000
Amortization of operating lease assets	858,000	829,000
Other assets	320,000	1,000
Accounts payable and accrued liabilities	1,005,000	(2,272,000)
Operating lease liabilities	(855,000)	(771,000)
Other liabilities	(64,000)	54,000
Net cash used in operating activities - continuing operations	(4,778,000)	(4,575,000)
Net cash provided by operating activities - discontinued operations	4,000	132,000
Net cash used in operating activities	(4,774,000)	(4,443,000)
INVESTING ACTIVITIES:
Purchases of property and equipment	(593,000)	(361,000)
Proceeds from insurance claims	0	294,000
Proceeds from disposals of property and equipment	393,000	329,000
Net cash (used in) provided by investing activities - continuing operations	(200,000)	262,000
Net cash provided by investing activities - discontinued operations	0	765,000
Net cash (used in) provided by investing activities	(200,000)	1,027,000
FINANCING ACTIVITIES:
Gross proceeds from stock issuance	9,660,000	3,597,000
Stock issuance costs and registration fees	(815,000)	(296,000)
Net line of credit repayments	(701,000)	(795,000)
TDR accrued future interest payments	(770,000)	0
Payments of finance leases	(111,000)	(159,000)
Proceeds from sale of finance lease assets	0	67,000
Net cash provided by financing activities - continuing operations	3,658,000	4,220,000
Net cash used in financing activities - discontinued operations	(2,000)	0
Net cash provided by financing activities	3,656,000	4,220,000
Net (Decrease) Increase in Cash and Cash Equivalents	(1,318,000)	804,000
Cash and Cash Equivalents, beginning of period	1,467,000	663,000
Cash and Cash Equivalents, end of period	149,000	1,467,000
Supplemental Cash Flow Information:
Cash paid for interest	822,000	1,414,000
Cash paid for taxes	0	2,000
Supplemental Disclosure of Non-cash Investing and Financing Activities:
Non-cash reduction of debt in connection with restructuring of senior revolving credit facility	0	16,000,000
Non-cash issuance of Company common stock and warrants in connection with restructuring of senior revolving credit facility	0	2,532,000
Non-cash conversion of subordinated debt and accrued interest to Company common stock	1,312,000	1,515,000
Non-cash conversion of accrued interest to senior revolving credit facility	0
Non-cash conversion of unamortized subordinated debt discount	61,000	0
Deferred loan costs paid directly by related party in lieu of subordinated note payable	210,000	0
Equipment Term Loan [Member]
FINANCING ACTIVITIES:
Term loan repayments	(3,505,000)	0
Paycheck Protection Program CARES Act [Member]
FINANCING ACTIVITIES:
Proceeds from PPP loan (Note 5)	0	1,940,000
Other Long-term Debt [Member]
FINANCING ACTIVITIES:
Term loan repayments	(100,000)	(134,000)
Conversion of Subordinated Debt to Equity[Member]
Adjustments to reconcile net loss to net cash used in operating activities:
Fair value of warrant issued upon conversion of subordinated debt to equity	$ 304,000	$ 0