Stockholders' Equity (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Options [Member] | Non-employee Consultants [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expenses	$ 39	$ 34	$ 86	$ 124
Restricted stock units [Member] | Non-employee Consultants [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expenses	60	90	82	278
Restricted stock units [Member] | Employees and Directors [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expenses	668	744	1,463	1,794
Research and development expenses [Member] | Options [Member] | Non-employee Consultants [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expenses	15	13	33	97
Research and development expenses [Member] | Restricted stock units [Member] | Non-employee Consultants [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expenses	11	(8)	23	18
Research and development expenses [Member] | Restricted stock units [Member] | Employees and Directors [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expenses	192	121	414	440
General and administrative expenses [Member] | Options [Member] | Non-employee Consultants [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expenses	24	21	53	27
General and administrative expenses [Member] | Restricted stock units [Member] | Non-employee Consultants [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expenses	49	98	59	260
General and administrative expenses [Member] | Restricted stock units [Member] | Employees and Directors [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expenses	$ 476	$ 623	$ 1,049	$ 1,354