CONSOLIDATED STATEMENT OF STOCKHOLDERS EQUITY - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
BALANCE at Jun. 30, 2018	$ 212,000	$ 16,890,000	$ (13,069,000)	$ 59,420,000	$ 63,453,000
BALANCE (in shares) at Jun. 30, 2018	21,204,327		(2,475,245)
Implementation of ASC606	$ 0	0	$ 0	(719,000)	(719,000)
Repurchase of treasury shares	$ 0	0	$ (549,000)	0	(549,000)
Repurchase of treasury shares (in shares)	0		39,163
Stock options exercised	$ 0	16,000	$ 0	0	16,000
Stock options exercised (in shares)	2,500		0
Stock-based compensation expense	$ 0	4,000	$ 0	0	4,000
Net income	0	0	0	1,504,000	1,504,000
BALANCE at Sep. 30, 2018	$ 212,000	16,910,000	$ (13,618,000)	60,205,000	63,709,000
BALANCE (in shares) at Sep. 30, 2018	21,206,827		(2,514,408)
BALANCE at Jun. 30, 2019	$ 212,000	17,103,000	$ (17,067,000)	70,924,000	71,172,000
BALANCE (in shares) at Jun. 30, 2019	21,227,094		(2,749,310)
Stock-based compensation expense	$ 0	17,000	$ 0	0	17,000
Net income	0	0	0	3,233,000	3,233,000
BALANCE at Sep. 30, 2019	$ 212,000	$ 17,120,000	$ (17,067,000)	$ 74,157,000	$ 74,422,000
BALANCE (in shares) at Sep. 30, 2019	21,227,094		(2,749,310)