Lease - Summary of Supplemental Cash Flow and Other Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 85	$ 85
Operating cash flows from finance leases	0	1
Financing cash flow from finance leases	10	10
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 18	$ 7
Weighted-average remaining lease term:
Operating leases	2 years 3 months 14 days	3 years 2 months 8 days
Finance leases	1 month 28 days	1 year 1 month 28 days
Weighted-average discount rate:
Operating leases	0.99%	1.03%
Finance leases	6.54%	6.54%