Long Term Debt - Additional Information (Detail) - USD ($)		12 Months Ended
	Jul. 31, 2018	Jun. 30, 2019	Jun. 30, 2018		Jun. 30, 2017	[1]	Dec. 23, 2016
Debt Instrument [Line Items]
Aggregate principal amount of loan		$ 235,000,000.0	$ 10,000,000.0
Long term debt, net		233,500,000	9,300,000	[1]
Principal repayment		115,000,000.0	143,000,000.0	[1]	$ 105,000,000.0
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Principal repayment		$ 115,000,000.0	$ 143,000,000.0
Revolving Credit Facility [Member] | Amendment to Credit Agreement [Member]
Debt Instrument [Line Items]
Aggregate principal amount of loan	$ 300,000,000.0
Upfront fees	1,800,000
Debt issuance costs	300,000
Long term debt, net	233,500,000
Scheduled principal payments prior to maturity date	$ 0
Revolving Credit Facility [Member] | Counsyl Inc [Member] | Amendment to Credit Agreement [Member]
Debt Instrument [Line Items]
Loan agreement, maturity date	Jul. 31, 2023
Loans maximum borrowing capacity	$ 350,000,000.0						$ 300,000,000.0

[1] Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 1 to the financial statements of this report for additional information.