Organization and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Other income (expense)	$ (2.5)	$ 1.5	$ 0.5
Interest expense	(6.0)	(0.3)	(0.2)
Other long-term liabilities	7.2	7.8
Contingent consideration	$ 13.2	10.4
Equipment [Member] | Minimum [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Estimated useful lives, in years	5 years
Equipment [Member] | Maximum [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Estimated useful lives, in years	7 years
Leasehold Improvements [Member] | Minimum [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Estimated useful lives, in years	3 years
Leasehold Improvements [Member] | Maximum [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Estimated useful lives, in years	10 years
Restatement Adjustment [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Other income (expense)		0.3	0.2
Interest expense		(0.3)	$ (0.2)
Other long-term liabilities		(10.4)
Contingent consideration		$ 10.4