Acquisitions - Additional Information (Detail)			0 Months Ended		3 Months Ended	6 Months Ended			6 Months Ended			0 Months Ended
	Dec. 31, 2013 USD ($)	Jun. 30, 2013 USD ($)	Oct. 17, 2013 Duran Audio BV [Member] USD ($)	Oct. 17, 2013 Duran Audio BV [Member] EUR (€)	Dec. 31, 2013 Duran Audio BV [Member] USD ($)	Dec. 31, 2013 Duran Audio BV [Member] USD ($)	Dec. 31, 2013 Duran Audio BV [Member] Technology [Member] USD ($)	Dec. 31, 2013 Duran Audio BV [Member] Customer Relationships [Member] USD ($)	Dec. 31, 2013 Duran Audio BV [Member] Tradename [Member] USD ($)	Dec. 31, 2013 Duran Audio BV [Member] Minimum [Member] Customer Relationships [Member]	Dec. 31, 2013 Duran Audio BV [Member] Maximum [Member] Customer Relationships [Member]	Oct. 13, 2012 Interchain [Member] USD ($)	Jul. 31, 2012 Interchain [Member] USD ($)	Dec. 31, 2013 Interchain [Member] USD ($)	Jun. 30, 2013 Interchain [Member] USD ($)	Jul. 31, 2012 Interchain [Member] INR
Business Acquisition [Line Items]
Purchase price			$ 24,400,000	€ 18,000,000									$ 800,000			45,000,000
Payment for estimated net debt adjustment			700,000	600,000
Percentage of indemnification holdback			12.00%	12.00%
Number of years expected to occur certain days			1 year 6 months	1 year 6 months
Acquisition earn-out contingent payable			16,400,000	12,000,000									900,000			50,000,000
Preliminary valuation of contingent consideration			6,400,000	4,700,000
Goodwill	251,370,000	234,342,000	15,929,000		15,900,000	15,900,000
Goodwill amount deductible for tax purposes					0	0
Acquired intangible assets			13,907,000				11,500,000	2,300,000	100,000
Approximate useful life							5 years		1 year	9 months	2 years
Adjustment to inventories						600,000
Fair value amortized estimated lives						8 months 15 days
Acquisition costs incurred					300,000	300,000
Cash paid to acquire entity												500,000	300,000
Financial targets achievement period end													September 1, 2013 and September 2, 2014
Contingent consideration related to earn-out														200,000	300,000
Goodwill													600,000
Acquired intangible assets													$ 400,000