Condensed Consolidated Financial Statements of Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Total
Balance (in shares) at Jun. 30, 2024	30,134,510
Balance at Jun. 30, 2024	$ 60,000	$ 51,504,000	$ (32,227,000)	$ (99,000)	$ 19,238,000
Balance (in shares) at Jun. 30, 2024				34,900
Stock compensation expense for employee stock options	0	53,000	0	$ 0	53,000
Net (loss) income	$ 0	0	259,000	0	259,000
Balance (in shares) at Sep. 30, 2024	30,134,510
Balance at Sep. 30, 2024	$ 60,000	51,557,000	(31,968,000)	$ (99,000)	18,550,000
Balance (in shares) at Sep. 30, 2024				34,900
Balance (in shares) at Jun. 30, 2024	30,134,510
Balance at Jun. 30, 2024	$ 60,000	51,504,000	(32,227,000)	$ (99,000)	19,238,000
Balance (in shares) at Jun. 30, 2024				34,900
Net (loss) income					986,000
Balance (in shares) at Mar. 31, 2025	30,335,620
Balance at Mar. 31, 2025	$ 61,000	51,662,000	(31,242,000)	$ (99,000)	20,383,000
Balance (in shares) at Mar. 31, 2025				34,900
Balance (in shares) at Sep. 30, 2024	30,134,510
Balance at Sep. 30, 2024	$ 60,000	51,557,000	(31,968,000)	$ (99,000)	18,550,000
Balance (in shares) at Sep. 30, 2024				34,900
Stock compensation expense for employee stock options	0	43,000	0	$ 0	43,000
Net (loss) income	$ 0	0	116,000	$ 0	116,000
Shares issued upon exercise of stock options (in shares)	201,110			0
Shares issued upon exercise of stock options	$ 1,000	17,000	0	$ 0	18,000
Balance (in shares) at Dec. 31, 2024	30,335,620
Balance at Dec. 31, 2024	$ 61,000	51,617,000	(31,852,000)	$ (99,000)	19,727
Balance (in shares) at Dec. 31, 2024				34,900
Stock compensation expense for employee stock options	0	45,000	0	$ 0	45,000
Net (loss) income	$ 0	0	611,000	0	611,000
Balance (in shares) at Mar. 31, 2025	30,335,620
Balance at Mar. 31, 2025	$ 61,000	51,662,000	(31,242,000)	$ (99,000)	20,383,000
Balance (in shares) at Mar. 31, 2025				34,900
Balance (in shares) at Jun. 30, 2025	31,094,510
Balance at Jun. 30, 2025	$ 62,000	51,773,000	(31,419,000)	$ (99,000)	$ 20,317,000
Balance (in shares) at Jun. 30, 2025				34,900	34,900
Stock compensation expense for employee stock options	0	49,000	0	$ 0	$ 49,000
Net (loss) income	$ 0	0	123,000	0	123,000
Balance (in shares) at Sep. 30, 2025	31,094,510
Balance at Sep. 30, 2025	$ 62,000	51,822,000	(31,296,000)	$ (99,000)	20,489,000
Balance (in shares) at Sep. 30, 2025				34,900
Balance (in shares) at Jun. 30, 2025	31,094,510
Balance at Jun. 30, 2025	$ 62,000	51,773,000	(31,419,000)	$ (99,000)	$ 20,317,000
Balance (in shares) at Jun. 30, 2025				34,900	34,900
Net (loss) income					$ (1,476,000)
Shares issued upon exercise of stock options (in shares)					(0)
Balance (in shares) at Mar. 31, 2026	31,094,510
Balance at Mar. 31, 2026	$ 62,000	51,914,000	(32,895,000)	$ (99,000)	$ 18,982,000
Balance (in shares) at Mar. 31, 2026				34,900	34,900
Balance (in shares) at Sep. 30, 2025	31,094,510
Balance at Sep. 30, 2025	$ 62,000	51,822,000	(31,296,000)	$ (99,000)	$ 20,489,000
Balance (in shares) at Sep. 30, 2025				34,900
Stock compensation expense for employee stock options	0	42,000	0	$ 0	42,000
Net (loss) income	$ 0	0	(762,000)	0	(762,000)
Balance (in shares) at Dec. 31, 2025	31,904,510
Balance at Dec. 31, 2025	$ 62,000	51,864,000	(32,058,000)	$ (99,000)	19,769,000
Balance (in shares) at Dec. 31, 2025				34,900
Stock compensation expense for employee stock options	0	50,000	0	$ 0	50,000
Net (loss) income	$ 0	0	(837,000)	0	(837,000)
Balance (in shares) at Mar. 31, 2026	31,094,510
Balance at Mar. 31, 2026	$ 62,000	$ 51,914,000	$ (32,895,000)	$ (99,000)	$ 18,982,000
Balance (in shares) at Mar. 31, 2026				34,900	34,900