Lease - Summary of Supplemental Cash Flow and Other Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 126	$ 141	$ 252	$ 260
Operating cash flows from finance leases	2	2	3	4
Financing cash flow from finance leases	9	9	18	17
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 0	$ 682	$ 35	$ 691
Weighted-average remaining lease term:
Operating leases	1 year 10 months 24 days	2 years 10 months 24 days	1 year 10 months 24 days	2 years 10 months 24 days
Finance leases	3 years 10 months 17 days	4 years 3 months 10 days	3 years 10 months 17 days	4 years 3 months 10 days
Weighted-average discount rate:
Operating leases	1.15%	3.49%	1.15%	3.49%
Finance leases	6.54%	6.54%	6.54%	6.54%