Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands	Preferred Stock [Member] Series B Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balances (in shares) at Jun. 30, 2017	59,065	55,017,419
Balances at Jun. 30, 2017		$ 55	$ 83,151	$ (72,604)	$ 10,602
Issuance of common stock pursuant to exercise of options (in shares)		82,810			82,810
Issuance of common stock pursuant to exercise of options			50		$ 50
Issuance of common stock, net (in shares)		980,918
Issuance of common stock, net		$ 1	478		479
Issuance of common stock pursuant to exercise of warrants (in shares)		250,000
Issuance of common stock pursuant to exercise of warrants			3		3
Payment of dividend to preferred stockholders			(11)		(11)
Share-based compensation			404		404
Share-based compensation for third party services			203		203
Adoption of ASU 2016-09			44	(44)
Net loss				(6,700)	(6,700)
Balances (in shares) at Jun. 30, 2018	59,065	56,331,147
Balances at Jun. 30, 2018		$ 56	84,322	(79,348)	$ 5,030
Issuance of common stock pursuant to exercise of options (in shares)		56,900			56,900
Issuance of common stock pursuant to exercise of options			15		$ 15
Issuance of common stock, net (in shares)		11,000,000
Issuance of common stock, net		$ 11	7,359		7,370
Payment of dividend to preferred stockholders			(11)		(11)
Share-based compensation			420		420
Net loss				(5,144)	(5,144)
Balances (in shares) at Jun. 30, 2019	59,065	67,388,047
Balances at Jun. 30, 2019		$ 67	92,105	(84,492)	$ 7,680
Issuance of common stock pursuant to exercise of options (in shares)		262,500			262,500
Issuance of common stock pursuant to exercise of options		$ 1	130		$ 131
Issuance of common stock, net (in shares)		1,247,232
Issuance of common stock, net		$ 1	873		874
Payment of dividend to preferred stockholders			(11)		(11)
Share-based compensation			495		495
Net loss				(3,446)	(3,446)
Balances (in shares) at Jun. 30, 2020	59,065	68,897,779
Balances at Jun. 30, 2020		$ 69	$ 93,592	$ (87,938)	$ 5,723