Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
OPERATING ACTIVITIES
Net income (loss)	$ 1,094,000	$ (1,241,000)
Net loss from discontinued operations	0	(390,000)
Net income (loss) from continuing operations	1,094,000	(851,000)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	3,419,000	3,186,000
Loss (gain) on disposal of equipment	12,000	(53,000)
Impairment loss	127,000	0
Gain on settlement (Note 4)	(1,252,000)
Change in fair value of warrant liability	0	540,000
Stock-based compensation	168,000	188,000
Amortization of debt issuance costs and discount	226,000	126,000
Provision for bad debt expense	3,000	33,000
Changes in operating assets and liabilities
Accounts receivable	2,098,000	6,839,000
Inventories	142,000	82,000
Prepaid expense and other current assets	(21,000)	195,000
Amortization of operating lease assets	329,000
Other assets	138,000	(60,000)
Accounts payable and accrued liabilities	(429,000)	(3,101,000)
Operating lease liabilities	(322,000)
Other liabilities	99,000	0
Net cash provided by operating activities - continuing operations	5,831,000	7,124,000
Net cash provided by (used in) operating activities - discontinued operations	23,000	(599,000)
Net cash provided by - operating activities	5,854,000	6,525,000
INVESTING ACTIVITIES
Purchases of property and equipment	(567,000)	(1,426,000)
Proceeds from disposals of property and equipment	219,000	145,000
Proceeds from insurance claims	27,000	122,000
Net cash used in investing activities - continuing operations	(321,000)	(1,159,000)
Net cash provided by (used in) investing activities - discontinued operations	760,000	(44,000)
Net cash provided by (used in) investing activities	439,000	(1,203,000)
FINANCING ACTIVITIES
Net line of credit payments	(2,071,000)	(5,386,000)
Repayment of long-term debt	(70,000)	(66,000)
Payments of finance leases	(202,000)
Repayment of note	(3,700,000)	0
Other financing activities	(1,000)	(26,000)
Net cash used in financing activities	(6,044,000)	(5,478,000)
Net Increase (Decrease) in Cash and Cash Equivalents	249,000	(156,000)
Cash and Cash Equivalents, beginning of period	257,000	391,000
Cash and Cash Equivalents, end of period	506,000	235,000
Supplemental Cash Flow Information:
Cash paid for interest	1,254,000	863,000
Cash paid for taxes	32,000	32,000
Supplemental Disclosure of Non-cash Investing and Financing Activities:
Non-cash proceeds from revolving credit facilities		49,000
Cashless exercise of stock options		994,000
Non-cash proceeds of warrant exercise		500,000
Non-cash subordinated debt principal repayment		(500,000)
Non-cash conversion of warrant liability to equity		$ 1,371,000