Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income (loss)	$ 76,000	$ 2,227,000
Reconciliation of net income to cash provided by operating activities:
Depreciation and amortization expense	2,553,000	2,308,000
Amortization of debt issuance costs	35,000	31,000
Compensation costs - stock options	3,000	4,000
Provision for losses on accounts receivable	11,000	35,000
Gain from disposal of equipment	0	(3,000)
Gain on debt extinguishment	0	(1,964,000)
Change in operating assets and liabilities:
Accounts receivable	(3,487,000)	(1,210,000)
Unbilled membership dues receivable	(300,000)	(254,000)
Inventories	(384,000)	(244,000)
Prepaid expenses	(62,000)	(21,000)
Other assets, net	15,000	14,000
Increase (Decrease) in Accounts Payable, Total	610,000	(418,000)
Accrued payroll and other compensation	707,000	417,000
Accrued income taxes	61,000	54,000
Other accrued taxes	(118,000)	(33,000)
Deferred membership dues revenue	1,286,000	1,226,000
Other liabilities and accrued expenses	363,000	(79,000)
Net cash provided by operating activities	1,369,000	2,090,000
Cash flows from investing activities:
Capital expenditures	(5,232,000)	(3,249,000)
Proceeds from disposal of equipment	0	3,000
Net cash used in investing activities	(5,232,000)	(3,246,000)
Cash flows from financing activities:
Proceeds under New Term Loan facility	31,000,000	0
Principal payments on term loan facilities	(20,879,000)	(828,000)
Borrowings under line of credit facility	950,000	0
Payments of debt issuance costs	(277,000)	0
Principal payments on finance lease obligations	(132,000)	(271,000)
Net cash provided by (used in) financing activities	10,804,000	(741,000)
Increase (decrease) in cash, cash equivalents and restricted cash	6,941,000	(1,897,000)
Cash, cash equivalents and restricted cash at beginning of period	4,950,000	8,095,000
Cash, cash equivalents and restricted cash at end of period	11,891,000	6,198,000
Significant non-cash operating and investing activities:
Capital expenditures included in accounts payable	223,000	294,000
Significant non-cash investing and financing activities:
Operating lease right-of-use assets in exchange for lease obligations	31,000	67,000
Cash paid during the period for interest	820,000	851,000
Cash paid during the period for income taxes	47,000	31,000
Paycheck Protection Program CARES Act [Member]
Significant non-cash operating and financing activities:
Interest forgiven from Paycheck Protection Program loans	0	17,000
Subsidiaries [Member]
Cash flows from financing activities:
Proceeds from subsidiary private placement offering	$ 142,000	$ 358,000