Lease - Summary of Supplemental Cash Flow and Other Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 123	$ 148	$ 383	$ 437
Operating cash flows from finance leases	2	2	6	7
Financing cash flow from finance leases	9	8	26	24
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 21	$ 15	$ 712	$ 1,463
Weighted-average remaining lease term:
Operating leases	2 years 7 months 28 days	3 years 7 months 28 days	2 years 7 months 28 days	3 years 7 months 28 days
Finance leases	4 years 1 month 24 days	3 years 8 months 26 days	4 years 1 month 24 days	3 years 8 months 26 days
Weighted-average discount rate:
Operating leases	3.40%	6.54%	3.40%	6.54%
Finance leases	6.54%	5.56%	6.54%	5.56%