Loan from National Brain Tumor Society and National Foundation for Cancer Research - Summary of Loan (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2021 USD ($)
Guarantee Obligations [Line Items]
Interest expense	$ 30
Amortization of deferred financing costs	94
N B T S and N F C R [Member]
Guarantee Obligations [Line Items]
Funding	500
Deferred financing costs	(94)
Interest expense	30
Amortization of deferred financing costs	94
Payment of principal and interest	$ (530)