Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Cash receipts from customers and other receipts	$ 20,916,000	$ 13,395,000
Cash paid to vendors	(13,296,000)	(10,410,000)
Cash paid for payroll and taxes	(1,357,000)	(1,589,000)
Cash paid for interest	0	(9,000)
NET CASH PROVIDED BY OPERATING ACTIVITIES	6,263,000	1,387,000
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of bond securities	(3,079,000)	0
Maturities of bond securities	97,000	0
Purchases of property	0	(29,000)
Proceeds from sale of property and equipment	0	4,203,000
Payments for other assets	(33,000)	(74,000)
NET CASH (USED IN) PROVIDED BY INVESTING ACTIVITIES	(3,015,000)	4,100,000
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from long-term debt	0	600,000
Payments of long-term debt	0	(800,000)
Common stock issuance costs and other	(335,000)	(560,000)
NET CASH USED IN FINANCING ACTIVITIES	(335,000)	(760,000)
NET INCREASE IN CASH	2,913,000	4,727,000
CASH AND RESTRICTED CASH AT BEGINNING OF YEAR	5,596,000	869,000
CASH AND RESTRICTED CASH AT END OF YEAR	8,509,000	5,596,000
RECONCILIATION OF NET INCOME (LOSS) TO NET CASH PROVIDED BY OPERATING ACTIVITIES:
Net loss	1,787,000	(3,420,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	1,116,000	1,301,000
Bad debt provision	28,000	68,000
Share-based compensation	855,000	705,000
Cost of real estate sales	167,000	324,000
Impairment charges	0	40,000
Loss on disposal of property	0	29,000
Changes in operating assets and liabilities:
Accounts receivable	183,000	191,000
Retirement liabilities	2,056,000	3,038,000
Accounts payable	9,000	(319,000)
Other operating assets and liabilities	62,000	(570,000)
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 6,263,000	$ 1,387,000