Schedule II-Valuation and Qualifying Accounts (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Accounts Receivable, Net [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 2,010	$ 2,008	$ 2,251
Additions charged to costs and expenses	5,076	2,216	3,016
Deductions	(547)	(2,214)	(3,259)
Balance at end of period	6,539	2,010	2,008
Securities Clearing Receivables [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period			2,000
Deductions			(2,000)
Deferred Tax Valuation Allowance [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	12,100	15,900	25,700
Additions charged to costs and expenses	2,600
Deductions		(3,800)	(9,800)
Balance at end of period	$ 14,700	$ 12,100	$ 15,900