Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Allowance for doubtful accounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year		$ 2,016	$ 1,048	$ 1,852
Additions Charged to Expense		(134)	1,123	(482)
Deduction from Reserves	[1]	(568)	(155)	(322)
Balance at End of Year		1,314	2,016	1,048
Warranty reserve
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year		3,908	3,251	2,859
Additions Charged to Expense		4,850	4,648	5,047
Additions Charged to Other Accounts	[2]		82
Deduction from Reserves		(4,212)	(4,073)	(4,655)
Balance at End of Year		4,546	3,908	3,251
Deferred tax asset valuation allowance
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year		42,641	2,713
Additions Charged to Expense		(79)	8,464
Additions Charged to Other Accounts	[3]		36,240
Deduction from Reserves	[4]		(4,776)
Balance at End of Year		$ 42,562	$ 42,641	$ 2,713

[1] Primarily relates to write-offs of accounts receivable.

[2] Relates to the warranty reserve acquired from the acquisitions.

[3] Valuation allowance recorded through goodwill.

[4] Reduction in valuation allowance as a result of divesture of portion of business.