Consolidated Statement of Shareholders' Equity - USD ($)	Restricted Stock [Member] Common Stock [Member]	Restricted Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balances (in shares) at Dec. 31, 2021			6,049,000
Balances at Dec. 31, 2021			$ 10,758,000	$ 7,444,000	$ 1,691,000	$ 19,893,000	$ 4,346,000	$ 24,239,000
Stock-based compensation expense				399,000		399,000		$ 399,000
Options exercised (in shares)			3,000					4,000
Options exercised			$ 5,000			5,000		$ 5,000
Vested restricted stock awards (in shares)	132,000
Vested restricted stock awards		$ 0
Cash distributions to non-controlling interests							(573,000)	(573,000)
Net income					1,328,000	1,328,000	227,000	$ 1,555,000
Balances (in shares) at Dec. 31, 2022			6,184,000					6,184,000
Balances at Dec. 31, 2022			$ 10,763,000	7,843,000	3,019,000	21,625,000	4,000,000	$ 25,625,000
Stock-based compensation expense				389,000		389,000		$ 389,000
Options exercised (in shares)								0
Vested restricted stock awards (in shares)			116,000
Vested restricted stock awards								$ 0
Net income					610,000	610,000	(345,000)	$ 265,000
Balances (in shares) at Dec. 31, 2023			6,300,000					6,300,000
Balances at Dec. 31, 2023			$ 10,763,000	$ 8,232,000	$ 3,629,000	$ 22,624,000	$ 3,655,000	$ 26,279,000