Debt - Additional Information (Detail)	1 Months Ended	12 Months Ended				1 Months Ended	12 Months Ended						12 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended
	Sep. 30, 2013 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2014 Singapore Bank USD ($)	Jun. 30, 2013 Singapore Bank USD ($)	Sep. 30, 2013 Revolving Credit Facility USD ($)	Jun. 30, 2014 Yen denominated line of credit JPY (¥)	Jun. 30, 2014 London Interbank Offered Rate (LIBOR) Yen denominated line of credit	Jun. 30, 2013 London Interbank Offered Rate (LIBOR) Yen denominated line of credit	Jun. 30, 2014 Prime Rate Singapore Bank	Jun. 30, 2013 Prime Rate Singapore Bank	Sep. 30, 2013 Maximum Revolving Credit Facility USD ($)	Jun. 30, 2014 Maximum London Interbank Offered Rate (LIBOR)	Sep. 30, 2013 Maximum London Interbank Offered Rate (LIBOR) Revolving Credit Facility	Jun. 30, 2014 Minimum London Interbank Offered Rate (LIBOR)	Sep. 30, 2013 Minimum London Interbank Offered Rate (LIBOR) Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity				$ 300,000	$ 400,000	$ 225,000,000
Line of credit facility, prior borrowing capacity						140,000,000
Term loan	100,000,000	85,000,000
Term loan, quarterly principal Payment	5,000,000
Term loan, first quarterly principal payment commencement date	Oct. 01, 2013
Credit facility, optional additional borrowing amount												100,000,000
Credit facility, term						5 years
Debt instrument, month and year of maturity						2018-09	2016-06
Debt instrument, rate added on variable rate								0.625%	0.625%	1.00%	1.00%		1.50%	1.75%	0.625%	0.75%
Financing cost incurred		1,000,000
Deferred financing costs		500,000
Credit facility							500,000,000
Aggregate amount available under lines of credit		71,000,000	29,800,000
Total outstanding letters of credit		1,900,000	1,300,000	0	0
Weighted average interest rate of total borrowings		1.80%	1.40%
Weighted average of total borrowings		222,600,000	82,500,000
Weighted average interest rate of borrowings				5.25%	5.25%
Credit facility, interest paid		4,200,000	1,100,000
Credit facility, commitment fees paid		$ 4,200,000	$ 1,100,000