Valuation and Qualifying Accounts (Detail) - Allowance for Doubtful Accounts - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year		$ 691	$ 517	$ 1,294
Charged to costs and expenses		76	484	8
Charged to other accounts
Deductions	[1]	254	310	785
Balance at end of year		$ 513	$ 691	$ 517

[1] Specific accounts written off as uncollectible.