CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)
Balance at beginning (in shares) at Jun. 30, 2019		16,433,128	(295,615)
Balances at beginning at Jun. 30, 2019	$ 26,126	$ 165	$ (1,554)	$ 29,020	$ (1,505)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)	9,200	9,200
Exercise of stock options	$ 28			28
Stock-based compensation	104			104
Net income (loss)	686				686
Balance at end (in shares) at Sep. 30, 2019		16,442,328	(295,615)
Balances at end at Sep. 30, 2019	26,944	$ 165	$ (1,554)	29,152	(819)
Balance at beginning (in shares) at Jun. 30, 2020		16,667,572	(295,615)
Balances at beginning at Jun. 30, 2020	$ 29,578	$ 168	$ (1,554)	30,203	761
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)	50,531	50,531
Exercise of stock options	$ 225	$ 1		224
Stock-based compensation	162			162
Net income (loss)	(293)				(293)
Balance at end (in shares) at Sep. 30, 2020		16,718,103	(295,615)
Balances at end at Sep. 30, 2020	$ 29,672	$ 169	$ (1,554)	$ 30,589	$ 468