Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net income (loss)	$ (2,003)	$ (996)
Reconciliation of net income (loss) to cash provided by operating activities:
Depreciation and amortization expense	1,895	1,671
Amortization of debt issuance costs	25	21
Compensation costs - stock options	1	2
Provision for losses on accounts receivable	10	6
Change in operating assets and liabilities:
Accounts receivable	36	(527)
Unbilled membership dues receivable	(484)	(567)
Inventories	(369)	(425)
Prepaid expenses	126	57
Other assets, net	91	11
Accounts payable	595	(349)
Accrued payroll and other compensation	182	932
Accrued income taxes	(12)	28
Other accrued taxes	(33)	(200)
Deferred membership dues revenue	2,094	2,419
Other liabilities and accrued expenses	347	36
Net cash provided by (used in) operating activities	2,501	2,119
Cash flows from investing activities:
Capital expenditures	(2,210)	(3,304)
Net cash used in investing activities	(2,210)	(3,304)
Cash flows from financing activities:
Borrowings under line of credit facility	650	0
Principal payments on term loan facilities	(277)	(577)
Principal payments on finance lease obligations	(47)	(63)
Net cash used in financing activities	326	(498)
Decrease in cash, cash equivalents and restricted cash	617	(1,683)
Cash, cash equivalents and restricted cash at beginning of period	12,050	4,950
Cash, cash equivalents and restricted cash at end of period	12,667	3,267
Supplemental disclosure of cash flow information:
Capital expenditures included in accounts payable	24	1,139
Significant non-cash investing and financing activities:
Operating lease right-of-use assets in exchange for lease obligations	47	31
Finance lease obligations incurred	154	0
Cash paid during the period for interest	1,008	525
Cash paid during the period for income taxes	66	25
Subsidiaries [Member]
Cash flows from financing activities:
Proceeds from subsidiary private placement offering	$ 0	$ 142