Lease - Summary of Supplemental Balance Sheet Information Relating to Leases (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Jun. 30, 2020
Operating Leases:
Operating Lease ROU Assets	$ 1,165	$ 1,251	$ 1,251
Finance Leases:
Finance Lease ROU Assets	$ 203		$ 203
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	us-gaap:OtherAssets		us-gaap:OtherAssets
Accumulated amortization	$ 80		$ 72
Current finance lease liabilities	$ 37		$ 37
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	us-gaap:DebtCurrent		us-gaap:DebtCurrent
Long-term finance lease liabilities	$ 44		$ 52
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-term debt		Long-term debt