Lease - Summary of Supplemental Cash Flow and Other Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 141	$ 150	$ 260	$ 289
Operating cash flows from finance leases	2	2	4	5
Financing cash flow from finance leases	9	8	17	16
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 682	$ 9	$ 691	$ 1,448
Weighted-average remaining lease term:
Operating leases	2 years 10 months 24 days	3 years 10 months 28 days	2 years 10 months 24 days	3 years 10 months 28 days
Finance leases	4 years 3 months 10 days	3 years 9 months 7 days	4 years 3 months 10 days	3 years 9 months 7 days
Weighted-average discount rate:
Operating leases	3.49%	6.54%	3.49%	6.54%
Finance leases	6.54%	5.53%	6.54%	5.53%