Lease - Summary of Supplemental Cash Flow and Other Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 91	$ 114	$ 273	$ 366
Operating cash flows from finance leases	2	1	2	4
Financing cash flow from finance leases	10	10	29	28
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 0	$ 289	$ 24	$ 324
Weighted-average remaining lease term:
Operating leases	2 years 9 months 29 days	3 years 8 months 26 days	2 years 9 months 29 days	3 years 8 months 26 days
Finance leases	7 months 28 days	1 year 7 months 28 days	7 months 28 days	1 year 7 months 28 days
Weighted-average discount rate:
Operating leases	1.00%	1.04%	1.00%	1.04%
Finance leases	6.54%	6.54%	6.54%	6.54%