Condensed Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balances (in shares) at Dec. 31, 2020	5,791,000
Balances at Dec. 31, 2020	$ 10,753,000	$ 7,024,000	$ 1,497,000	$ 19,274,000	$ 4,376,000	$ 23,650,000
Stock-based compensation expense (in shares)	10,000
Stock-based compensation expense	$ 0	107,000	0	107,000	0	107,000
Net income	$ 0	0	29,000	29,000	58,000	87,000
Balances (in shares) at Mar. 31, 2021	5,801,000
Balances at Mar. 31, 2021	$ 10,753,000	7,131,000	1,526,000	19,410,000	4,434,000	$ 23,844,000
Balances (in shares) at Dec. 31, 2021	6,049,000					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)	30,000
Stock-based compensation expense	$ 0	87,000	0	87,000	0	87,000
Net income	$ 0	0	269,000	269,000	125,000	$ 394,000
Balances (in shares) at Mar. 31, 2022	6,079,000					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