Leases - Additional Information (Detail) - USD ($)	Jun. 30, 2021	Jun. 30, 2020	Jul. 01, 2019
Lessee Lease Description [Line Items]
Operating lease liabilities	$ 1,278,000
Operating lease ROU assets	1,251,000	$ 970,000
Impact on retained earnings	$ 6,809,000	$ (81,000)
Accounting Standards Codification ("ASC") 842 [Member]
Lessee Lease Description [Line Items]
Operating lease liabilities			$ 1,423,000
Operating lease ROU assets			1,423,000
Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Accounting Standards Codification ("ASC") 842 [Member]
Lessee Lease Description [Line Items]
Impact on retained earnings			$ 0