Valuation and Qualifying Accounts (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2011
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at end of year	$ 10,139		$ 5,633
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	887		682		1,098
Charged to costs and expenses	409		211		172
Charged to other accounts
Deductions	2	[1]	6	[1]	588	[1]
Balance at end of year	$ 1,294		$ 887		$ 682

[1] Specific accounts written off as uncollectible.