Lease - Summary of Supplemental Cash Flow and Other Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 114	$ 123	$ 366	$ 383
Operating cash flows from finance leases	1	2	4	6
Financing cash flow from finance leases	10	9	28	26
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 289	$ 21	$ 324	$ 712
Weighted-average remaining lease term:
Operating leases	1 year 7 months 28 days	2 years 7 months 28 days	1 year 7 months 28 days	2 years 7 months 28 days
Finance leases	3 years 8 months 26 days	4 years 1 month 24 days	3 years 8 months 26 days	4 years 1 month 24 days
Weighted-average discount rate:
Operating leases	1.04%	3.40%	1.04%	3.40%
Finance leases	6.54%	6.54%	6.54%	6.54%