Condensed Consolidated Financial Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Total
Balance (in shares) at Jun. 30, 2023	29,984,510			34,900
Balance at Jun. 30, 2023	$ 60	$ 51,239	$ (32,339)	$ (99)	$ 18,861
Stock compensation expense for employee stock options	0	71	0	0	71
Net income (loss)	$ 0	0	(59)	$ 0	(59)
Shares issued upon exercise of stock options (in shares)	150,000			0
Shares issued upon exercise of stock options	$ 0	13	0	$ 0	13
Balance (in shares) at Sep. 30, 2023	30,134,510			34,900
Balance at Sep. 30, 2023	$ 60	51,323	(32,398)	$ (99)	18,886
Balance (in shares) at Jun. 30, 2023	29,984,510			34,900
Balance at Jun. 30, 2023	$ 60	51,239	(32,339)	$ (99)	18,861
Net income (loss)					(441)
Balance (in shares) at Dec. 31, 2023	30,134,510			34,900
Balance at Dec. 31, 2023	$ 60	51,385	(32,780)	$ (99)	18,566
Balance (in shares) at Sep. 30, 2023	30,134,510			34,900
Balance at Sep. 30, 2023	$ 60	51,323	(32,398)	$ (99)	18,886
Stock compensation expense for employee stock options	0	62	0	0	62
Net income (loss)	$ 0	0	(382)	$ 0	(382)
Balance (in shares) at Dec. 31, 2023	30,134,510			34,900
Balance at Dec. 31, 2023	$ 60	51,385	(32,780)	$ (99)	18,566
Balance (in shares) at Jun. 30, 2024	30,134,510			34,900
Balance at Jun. 30, 2024	$ 60	51,504	(32,227)	$ (99)	19,238
Stock compensation expense for employee stock options	0	53	0	0	53
Net income (loss)	$ 0	0	259	$ 0	259
Balance (in shares) at Sep. 30, 2024	30,134,510			34,900
Balance at Sep. 30, 2024	$ 60	51,557	(31,968)	$ (99)	19,550
Balance (in shares) at Jun. 30, 2024	30,134,510			34,900
Balance at Jun. 30, 2024	$ 60	51,504	(32,227)	$ (99)	19,238
Net income (loss)					$ 375
Shares issued upon exercise of stock options (in shares)					201,110
Balance (in shares) at Dec. 31, 2024	30,335,620			34,900
Balance at Dec. 31, 2024	$ 61	51,617	(31,852)	$ (99)	$ 19,727
Balance (in shares) at Sep. 30, 2024	30,134,510			34,900
Balance at Sep. 30, 2024	$ 60	51,557	(31,968)	$ (99)	19,550
Stock compensation expense for employee stock options	0	43	0	0	43
Net income (loss)	$ 0	0	116	$ 0	116
Shares issued upon exercise of stock options (in shares)	201,110			0
Shares issued upon exercise of stock options	$ 1	17	0	$ 0	18
Balance (in shares) at Dec. 31, 2024	30,335,620			34,900
Balance at Dec. 31, 2024	$ 61	$ 51,617	$ (31,852)	$ (99)	$ 19,727