Debt - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended			1 Months Ended
	Mar. 31, 2013 Senior Unsecured Credit Facilities	Mar. 31, 2013 Senior Unsecured Credit Facilities Maximum	Mar. 31, 2013 Senior Unsecured Credit Facilities Minimum	Oct. 12, 2012 Senior Unsecured Credit Facilities KeyBank National Association	Mar. 31, 2013 Senior Unsecured Credit Facilities Acquisition Covenants Maximum	Mar. 31, 2013 Senior Unsecured Credit Facilities Acquisition Covenants Minimum	Oct. 12, 2012 Senior Secured Credit Facility Loan and Security Agreement with Silicon Valley Bank
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 200,000			$ 35,000
Debt instrument borrowing period				5 years
Credit Agreement accordion feature, incremental revolver or term loan amount	50,000
Leverage Ratio		3.50			3.25
Interest Coverage Ratio			3.0			3.0
Remaining borrowing capacity	54,613
Borrowings outstanding	0
Amount of outstanding letter of credit	$ 3,000