CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Cash flows from operating activities:
Net loss	$ (511,000)	$ (1,291,000)	$ (638,000)	$ (1,786,000)	$ (1,572,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of operating lease right-of-use asset			20,000	19,000
Loss from investments in unconsolidated entities, net			266,000	1,131,000
Distributed earnings from unconsolidated entities			23,000	11,000
Deferred income taxes			0	0
Changes in:
Income taxes payable			(1,000)	(183,000)
Other current assets			(12,000)	8,000
Accounts payable and accrued expenses			(79,000)	(86,000)
Operating lease right-of-use liability			(22,000)	(21,000)
Net cash used in operating activities			(443,000)	(907,000)
Cash flows from investing activities:
Advances to unconsolidated entities			(305,000)	(175,000)
Repayments from loans to unconsolidated entities			44,000	0
Capital contributions to unconsolidated entities			(57,000)	0
Net cash used in investing activities			(318,000)	(175,000)
Cash flows from financing activities:
Repayment of finance lease obligations			0	0
Net cash used in financing activities			0	0
Net change in cash and cash equivalents			(761,000)	(1,082,000)
Cash and cash equivalents - beginning of period			1,537,000	2,178,000	2,178,000
Cash and cash equivalents - end of period	$ 776,000	$ 1,096,000	776,000	1,096,000	$ 1,537,000
Cash paid for:
Interest			1,000	0
Income taxes			$ 0	$ 183,000