Lease - Components of Lease Cost and Rent Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Operating lease cost:
Operating lease cost	$ 127	$ 147	$ 387	$ 437
Short-term rent expense	8	9	37	24
Variable lease cost	1	1	2	2
Total operating lease cost	136	157	426	463
Finance lease cost:
Amortization right-of-use assets	9	9	27	27
Interest on finance lease liabilities	2	2	6	7
Total finance lease cost	$ 11	$ 11	$ 33	$ 34