Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2021	5,308,973
Balance at Dec. 31, 2021	$ 53	$ 45,817	$ 9,453	$ (580)	$ 0	$ 54,743
Net income (loss)	$ 0	0	169	0	0	169
Stock-based compensation (in shares)	15,000
Stock-based compensation	$ 0	233	0	0	0	233
Balance (in shares) at Mar. 31, 2022	5,323,973
Balance at Mar. 31, 2022	$ 53	46,050	9,622	(580)	0	55,145
Balance (in shares) at Dec. 31, 2021	5,308,973
Balance at Dec. 31, 2021	$ 53	45,817	9,453	(580)	0	54,743
Net income (loss)						(3,088)
Balance (in shares) at Sep. 30, 2022	5,349,187
Balance at Sep. 30, 2022	$ 53	46,341	6,365	(580)	0	52,179
Balance (in shares) at Mar. 31, 2022	5,323,973
Balance at Mar. 31, 2022	$ 53	46,050	9,622	(580)	0	55,145
Net income (loss)	$ 0	0	(1,798)	0	0	(1,798)
Stock-based compensation (in shares)	15,000
Stock-based compensation	$ 0	70	0	0	0	70
Shares withheld to pay taxes (in shares)	(4,786)
Shares withheld to pay taxes	$ 0	(50)	0	0	0	(50)
Balance (in shares) at Jun. 30, 2022	5,334,187
Balance at Jun. 30, 2022	$ 53	46,070	7,824	(580)	0	53,367
Net income (loss)	0	0	(1,459)	0	0	(1,459)
Stock-based compensation	$ 0	80	0	0	0	80
Exercise of stock options (in shares)	15,000
Exercise of stock options	$ 0	191	0	0	0	191
Balance (in shares) at Sep. 30, 2022	5,349,187
Balance at Sep. 30, 2022	$ 53	46,341	6,365	(580)	0	52,179
Balance (in shares) at Dec. 31, 2022	5,349,187
Balance at Dec. 31, 2022	$ 53	46,346	(7,329)	(580)	0	38,490
Net income (loss)	$ 0	0	157	0	0	157
Stock-based compensation (in shares)	3,750
Stock-based compensation	$ 0	0	0	0	0	0
Balance (in shares) at Mar. 31, 2023	5,352,937
Balance at Mar. 31, 2023	$ 53	46,346	(7,172)	(580)	0	38,647
Balance (in shares) at Dec. 31, 2022	5,349,187
Balance at Dec. 31, 2022	$ 53	46,346	(7,329)	(580)	0	38,490
Net income (loss)						157
Balance (in shares) at Sep. 30, 2023	5,352,937
Balance at Sep. 30, 2023	$ 53	46,346	(7,194)	(580)	1,894	40,519
Balance (in shares) at Mar. 31, 2023	5,352,937
Balance at Mar. 31, 2023	$ 53	46,346	(7,172)	(580)	0	38,647
Net income (loss)	0	0	(130)	0	0	(130)
Consolidation of non-controlling interests	$ 0	0	0	0	1,872	1,872
Balance (in shares) at Jun. 30, 2023	5,352,937
Balance at Jun. 30, 2023	$ 53	46,346	(7,302)	(580)	1,872	40,389
Net income (loss)	$ 0	0	108	0	22	130
Balance (in shares) at Sep. 30, 2023	5,352,937
Balance at Sep. 30, 2023	$ 53	$ 46,346	$ (7,194)	$ (580)	$ 1,894	$ 40,519