Condensed Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($)	Restricted Stock [Member] Common Stock [Member]	Restricted Stock [Member] Additional Paid-in Capital [Member]	Restricted Stock [Member] Retained Earnings [Member]	Restricted Stock [Member] Parent [Member]	Restricted Stock [Member] Noncontrolling Interest [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 (in shares)							0
Stock-based compensation expense							$ 0	87,000	0	87,000	0	87,000
Vested restricted stock awards (in shares)	30,000
Vested restricted stock awards	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Net income							0	0	269,000	269,000	125,000	394,000
Stock-based compensation expense							$ 0	87,000	0	87,000	0	87,000
Balances (in shares) at Mar. 31, 2022							6,079,000
Balances at Mar. 31, 2022							$ 10,758,000	7,531,000	1,960,000	20,249,000	4,471,000	24,720,000
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
Net income												$ 1,242,000
Options exercised (in shares)												2,000
Balances (in shares) at Sep. 30, 2022							6,153,000
Balances at Sep. 30, 2022							$ 10,763,000	7,679,000	2,773,000	21,215,000	4,212,000	$ 25,427,000
Balances (in shares) at Mar. 31, 2022							6,079,000
Balances at Mar. 31, 2022							$ 10,758,000	7,531,000	1,960,000	20,249,000	4,471,000	24,720,000
Stock-based compensation expense (in shares)							0
Stock-based compensation expense							$ 0	72,000	0	72,000	0	72,000
Vested restricted stock awards (in shares)							31,000
Vested restricted stock awards							$ 0	0	0	0	0	0
Net income							$ 0	0	497,000	497,000	43,000	540,000
Options exercised (in shares)							2,000
Options exercised							$ 5,000	0	0	5,000	0	5,000
Stock-based compensation expense							$ 0	72,000	0	72,000	0	72,000
Balances (in shares) at Jun. 30, 2022							6,112,000
Balances at Jun. 30, 2022							$ 10,763,000	7,603,000	2,457,000	20,823,000	4,514,000	25,337,000
Stock-based compensation expense							$ 0	76,000	0	76,000	0	76,000
Vested restricted stock awards (in shares)							41,000
Vested restricted stock awards							$ 0	0	0	0	0	0
Net income							0	0	316,000	316,000	(8,000)	308,000
Cash distributions to non-controlling interests							0	0	0	0	(294,000)	(294,000)
Stock-based compensation expense							$ 0	76,000	0	76,000	0	76,000
Balances (in shares) at Sep. 30, 2022							6,153,000
Balances at Sep. 30, 2022							$ 10,763,000	7,679,000	2,773,000	21,215,000	4,212,000	$ 25,427,000
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							0	96,000	0	96,000	0	96,000
Net income							0	0	188,000	188,000	(88,000)	100,000
Stock-based compensation expense							$ 0	96,000	0	96,000	0	96,000
Balances (in shares) at Mar. 31, 2023							6,184,000
Balances at Mar. 31, 2023							$ 10,763,000	7,939,000	3,207,000	21,909,000	3,912,000	$ 25,821,000
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
Net income												$ 88,000
Balances (in shares) at Sep. 30, 2023							6,270,000					6,270,000
Balances at Sep. 30, 2023							$ 10,763,000	8,134,000	3,214,000	22,111,000	3,893,000	$ 26,004,000
Balances (in shares) at Mar. 31, 2023							6,184,000
Balances at Mar. 31, 2023							$ 10,763,000	7,939,000	3,207,000	21,909,000	3,912,000	25,821,000
Stock-based compensation expense							$ 0	97,000	0	97,000	0	97,000
Vested restricted stock awards (in shares)							30,000
Vested restricted stock awards							$ 0	0	0	0	0	0
Net income							0	0	(111,000)	(111,000)	(66,000)	(177,000)
Stock-based compensation expense							$ 0	97,000	0	97,000	0	97,000
Balances (in shares) at Jun. 30, 2023							6,214,000
Balances at Jun. 30, 2023							$ 10,763,000	8,036,000	3,096,000	21,895,000	3,846,000	25,741,000
Stock-based compensation expense							$ 0	98,000	0	98,000	0	98,000
Vested restricted stock awards (in shares)							56,000
Vested restricted stock awards							$ 0	0	0	0	0	0
Net income							0	0	118,000	118,000	47,000	165,000
Stock-based compensation expense							$ 0	98,000	0	98,000	0	$ 98,000
Balances (in shares) at Sep. 30, 2023							6,270,000					6,270,000
Balances at Sep. 30, 2023							$ 10,763,000	$ 8,134,000	$ 3,214,000	$ 22,111,000	$ 3,893,000	$ 26,004,000