Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Cash receipts from customers and other receipts	$ 16,834,000	$ 14,841,000
Cash paid to vendors	(13,523,000)	(12,352,000)
Cash paid for payroll and taxes	(1,433,000)	(1,529,000)
Cash paid for interest	(106,000)	(78,000)
NET CASH PROVIDED BY OPERATING ACTIVITIES	1,772,000	882,000
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property	(712,000)	(311,000)
Payments for other assets	(278,000)	(395,000)
NET CASH USED IN INVESTING ACTIVITIES	(990,000)	(706,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from long-term debt	1,500,000	500,000
Payments of long-term debt	(1,700,000)	(500,000)
Debt and common stock issuance costs and other	(653,000)	(581,000)
Stock options exercised	130,000
NET CASH USED IN FINANCING ACTIVITIES	(723,000)	(581,000)
NET INCREASE (DECREASE) IN CASH	59,000	(405,000)
CASH AT BEGINNING OF YEAR	624,000	1,029,000
CASH AT END OF YEAR	683,000	624,000
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Net income (loss)	(10,366,000)	498,000
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	1,496,000	1,559,000
Share-based compensation	705,000	563,000
Impairment charges	3,643,000	0
Disposal of property	55,000
Changes in operating assets and liabilities:
Accounts receivable, net	(184,000)	165,000
Retirement liabilities	837,000	455,000
Accounts payable	(668,000)	1,328,000
Income taxes receivable	2,499,000	(2,499,000)
Other operating assets and liabilities	3,755,000	(1,187,000)
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 1,772,000	$ 882,000