Debt - Schedule of Long-Term Debt and Current Portion of Long-Term Debt (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Jun. 30, 2013
Debt Instrument [Line Items]
Total	$ 270,038
Less: current portion of long-term debt	(30,000)	(30,000)
Total long-term debt	240,038	255,043
Fair Value [Member]
Debt Instrument [Line Items]
Term facility	270,000	285,000
Other obligations	38	43
Total	270,038	285,043
Less: current portion of long-term debt	(30,000)	(30,000)
Total long-term debt	240,038	255,043
Book Value [Member]
Debt Instrument [Line Items]
Term facility	270,000	285,000
Other obligations	38	43
Total	270,038	285,043
Less: current portion of long-term debt	(30,000)	(30,000)
Total long-term debt	$ 240,038	$ 255,043