Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Aug. 18, 2018	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Contributions to profit sharing retirement plan		$ 6,100	$ 4,600	$ 5,000
Contributions to the Compensation Plan by the employer		3,400	3,000
Pension adjustment, net of taxes		$ (3,108)	(6,122)	$ 2,846
2018 Employee Stock Purchase Plan
Defined Benefit Plan Disclosure [Line Items]
Requisite service period	2 years
Percentage of maximum employee subscription rate on base pay	15.00%
Common stock authorized for issuance under the Plan (in shares)	2,000,000
Shares purchased on behalf of employees under the Plan (in shares)		80,469
2018 Employee Stock Purchase Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Common stock discount percentage from the fair market value	90.00%
Swiss Plan
Defined Benefit Plan Disclosure [Line Items]
Pension liability		$ 26,900	20,800
Pension adjustment, net of taxes		(3,100)	(11,800)
Accumulated benefit obligation		$ 84,900	$ 69,700