Property and Equipment - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012 OptionPlan	Jun. 30, 2011	Jun. 30, 2010
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense related to property and equipment	$ 7,859	$ 6,364	$ 5,147
Gain from sale property and equipment	11,569
Lease term	10 years
Number of five year term option to renew	2
Computer equipment and software
Property, Plant and Equipment [Line Items]
Retirement of asset	$ 2,058	$ 10,143