CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Deficit
Balance at beginning (in shares) at Jun. 30, 2018		16,377,636	(295,615)
Balances at beginning at Jun. 30, 2018	$ 25,174	$ 164	$ (1,554)	$ 28,621	$ (2,057)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)	0
Stock-based compensation	$ 101			101
Net income	70				70
Balance at end (in shares) at Sep. 30, 2018		16,377,636	(295,615)
Balances at end at Sep. 30, 2018	25,683	$ 164	$ (1,554)	28,722	(1,649)
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	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)