Defined Contribution Plan - Additional Information (Detail) - USD ($)	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Defined Contribution Plan Disclosure [Line Items]
Percentage of deferred compensation	25.00%
Total matching contributions to the plan	$ 324,000	$ 327,000
Maximum [Member]
Defined Contribution Plan Disclosure [Line Items]
Percentage of deferred compensation match by employer	4.00%