Debt - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended							12 Months Ended		3 Months Ended		0 Months Ended		0 Months Ended		12 Months Ended							0 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Oct. 15, 2012	Oct. 10, 2012	Oct. 10, 2012 Letters of Credit [Member]	Oct. 10, 2012 Credit Agreement [Member]	Jun. 30, 2014 Convertible Senior Notes [Member]	Oct. 10, 2012 Convertible Senior Notes [Member]	Jun. 30, 2014 Maximum [Member]	Jun. 30, 2014 Minimum [Member]	Oct. 10, 2012 Multi-Currency Revolving Credit Facility [Member]	Oct. 10, 2012 Multi-Currency Revolving Credit Facility [Member]	Oct. 10, 2012 Term Loan and Revolving Credit Facility [Member]	Oct. 10, 2012 Term Loan and Revolving Credit Facility [Member]	Jun. 30, 2013 Revolving Credit Facility [Member]	Jun. 30, 2014 Revolving Credit Facility [Member]	Oct. 10, 2012 Revolving Credit Facility [Member]	Jun. 30, 2014 Revolving Credit Facility [Member] AMX LLC and Yurbuds [Member]	Jun. 30, 2014 Term Facility [Member]	Oct. 15, 2012 Term Facility [Member]	Oct. 10, 2012 Term Facility [Member]	Oct. 15, 2012 Cash [Member]
Debt Instrument [Line Items]
Short-term borrowings outstanding	$ 3,736,000	$ 3,736,000	$ 4,930,000
Lines of credit	64,600,000	64,600,000	55,700,000
Unsecured revolving credit facility, period of agreement, in years													5 years		5 years
Current borrowing capacity														550,000,000
Line of credit facility, maximum borrowing capacity							60,000,000
Increase in line of credit facility						250,000,000
Aggregate Revolving Commitment														750,000,000		300,000,000
Required consolidated EBITDA to consolidated cash interest expense as per New Credit Agreement											3.5:1.0
Required consolidated total debt to consolidated EBITDA as per New Credit Agreement												3.5:1.0
Required consolidated total debt to consolidated EBITDA as per New Credit Agreement after acquisition	4.0:1.0
Amount of outstanding letters of credit																		300,000,000	8,700,000
Borrowings under the Term Facility								0										35,600,000			4,600,000	300,000,000	300,000,000
Convertible Senior Notes paid									400,000,000	400,000,000
Borrowings under revolving credit facility	300,000,000	300,000,000	0																	300,000,000
Current portion of long-term debt	35,625,000	35,625,000	30,000,000															255,000,000
Long-term debt non current	219,407,000	219,407,000	255,043,000															219,400,000
Unused available credit																		445,400,000
Fees and other expenses																	6,100,000
Write-off of debt issuance costs																	1,100,000
Convertible Senior Notes outstanding					400,000,000
Repayment of principal borrowings fund																								100,000,000
Debt instrument, maturity date									Oct. 15, 2012
Interest expense, net		8,026,000	12,868,000	20,126,000
Interest expense, gross		10,100,000	15,300,000	27,000,000
Non-cash portion of interest expense		2,200,000	8,500,000	19,100,000					0
Cash interest expense, net		7,900,000	6,800,000	7,900,000
Interest income		2,100,000	2,400,000	6,900,000
Cash paid for interest, net of cash interest received		$ 6,500,000	$ 6,800,000	$ 3,100,000