Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net loss	$ (1,799)	$ (1,400)
Reconciliation of net loss to cash used in operating activities:
Depreciation and amortization expense	940	829
Amortization of debt issuance costs	10	11
Compensation costs - stock options	1	1
Provision for losses on accounts receivable	3	2
Change in operating assets and liabilities:
Accounts receivable	(2,303)	(806)
Unbilled membership dues receivable	(148)	(182)
Inventories	(270)	(253)
Prepaid expenses	(284)	(184)
Other assets, net	67	62
Accounts payable	2,131	(582)
Accrued payroll and other compensation	392	464
Accrued income taxes	(7)	7
Other accrued taxes	(134)	(67)
Deferred membership dues revenue	1,257	1,580
Other liabilities and accrued expenses	390	116
Net cash provided by (used in) operating activities	246	(402)
Cash flows from investing activities:
Capital expenditures	(1,098)	(1,284)
Net cash used in investing activities	(1,098)	(1,284)
Cash flows from financing activities:
Principal payments on term loan facilities	(138)	(287)
Borrowings under line of credit facility	650	0
Principal payments on finance lease obligations	(2)	(13)
Net cash provided by (used in) financing activities	510	(158)
Decrease in cash, cash equivalents and restricted cash	(342)	(1,844)
Cash, cash equivalents and restricted cash at beginning of period	12,050	4,950
Cash, cash equivalents and restricted cash at end of period	11,708	3,106
Significant non-cash operating and investing activities:
Capital expenditures included in accounts payable	76	614
Significant non-cash investing and financing activities:
Operating lease right-of-use assets in exchange for lease obligations	35	31
Finance lease obligations incurred	154	0
Cash paid during the period for interest	498	264
Cash paid during the period for income taxes	38	13
Subsidiaries [Member]
Cash flows from financing activities:
Proceeds from subsidiary private placement offering	$ 0	$ 142