CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings
Balance at beginning (in shares) at Jun. 30, 2020		16,667,572	295,615,000
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 loss	(293)				(293)
Balance at end (in shares) at Sep. 30, 2020		16,718,103	295,615,000
Balances at end at Sep. 30, 2020	29,672	$ 169	$ (1,554)	30,589	468
Balance at beginning (in shares) at Jun. 30, 2021		17,454,859	295,615,000
Balances at beginning at Jun. 30, 2021	46,584	$ 176	$ (1,554)	34,333	13,629
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock pursuant to secondary offering, net (in shares)		2,070,000
Issuance of common stock pursuant to secondary offering, net	$ 16,771	$ 21		16,750
Exercise of stock options (in shares)	0
Exercise of stock options	$ 0
Stock-based compensation	280			280
Net loss	(790)				(790)
Balance at end (in shares) at Sep. 30, 2021		19,524,859	295,615,000
Balances at end at Sep. 30, 2021	$ 62,845	$ 197	$ (1,554)	$ 51,363	$ 12,839