Acquisitions - Additional Information (Detail)				12 Months Ended		0 Months Ended							0 Months Ended		0 Months Ended								12 Months Ended					12 Months Ended			12 Months Ended				0 Months Ended		0 Months Ended		0 Months Ended		12 Months Ended		0 Months Ended				0 Months Ended	12 Months Ended					0 Months Ended		0 Months Ended		0 Months Ended		0 Months Ended						12 Months Ended				0 Months Ended	1 Months Ended	12 Months Ended				0 Months Ended		0 Months Ended
	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2014 Minimum [Member]	Jun. 30, 2014 Maximum [Member]	Oct. 17, 2013 Duran Audio BV [Member] USD ($)	Oct. 17, 2013 Duran Audio BV [Member] EUR (€)	Oct. 17, 2013 Duran Audio BV [Member] USD ($)	Oct. 17, 2013 Duran Audio BV [Member] EUR (€)	Oct. 17, 2013 Duran Audio BV [Member] Technology [Member] USD ($)	Oct. 17, 2013 Duran Audio BV [Member] Product Lines [Member] USD ($)	Oct. 17, 2013 Duran Audio BV [Member] Customer Relationships [Member] USD ($)	Oct. 17, 2013 Duran Audio BV [Member] Tradename [Member]	Oct. 17, 2013 Duran Audio BV [Member] Tradename [Member] USD ($)	Oct. 17, 2013 Duran Audio BV [Member] Minimum [Member] Technology [Member]	Oct. 17, 2013 Duran Audio BV [Member] Minimum [Member] Product Lines [Member]	Oct. 17, 2013 Duran Audio BV [Member] Minimum [Member] Customer Relationships [Member]	Oct. 17, 2013 Duran Audio BV [Member] Maximum [Member] Technology [Member]	Oct. 17, 2013 Duran Audio BV [Member] Maximum [Member] Product Lines [Member]	Oct. 17, 2013 Duran Audio BV [Member] Maximum [Member] Customer Relationships [Member]	Feb. 28, 2013 Martin [Member] USD ($)	Feb. 28, 2013 Martin [Member] EUR (€)	Jun. 30, 2013 Martin [Member] USD ($)	Jun. 30, 2014 Martin [Member] USD ($)	Feb. 28, 2013 Martin [Member] USD ($)	Feb. 28, 2013 Martin [Member] EUR (€)	Jun. 30, 2014 Martin [Member] Customer Relationships [Member] USD ($)	Jun. 30, 2014 Martin [Member] Technology [Member] USD ($)	Jun. 30, 2014 Martin [Member] Backlog [Member] USD ($)	Jun. 30, 2014 Martin [Member] Non-Amortized Indefinite Trade Name [Member] USD ($)	Jun. 30, 2014 Martin [Member] Minimum [Member]	Jun. 30, 2014 Martin [Member] Minimum [Member] Customer Relationships [Member]	Jun. 30, 2014 Martin [Member] Maximum [Member]	Jun. 30, 2014 Martin [Member] Maximum [Member] Customer Relationships [Member]	Apr. 10, 2013 iOnRoad [Member] USD ($)	Apr. 10, 2013 iOnRoad [Member] USD ($)	Apr. 10, 2013 iOnRoad [Member] Technology [Member]	Apr. 10, 2013 iOnRoad [Member] Technology [Member] USD ($)	Apr. 10, 2013 iOnRoad [Member] Maximum [Member]	Jun. 17, 2014 Yurbuds [Member] USD ($)	Jun. 30, 2014 Yurbuds [Member] USD ($)	Jun. 17, 2014 Yurbuds [Member] USD ($)	Jun. 17, 2014 Yurbuds [Member] Customer Relationships [Member]	Jun. 17, 2014 Yurbuds [Member] Customer Relationships [Member] USD ($)	Jun. 17, 2014 Yurbuds [Member] Tradename [Member] USD ($)	Jun. 17, 2014 Yurbuds [Member] Customer Contracts [Member] USD ($)	Jun. 13, 2014 AMX LLC [Member] USD ($)	Jun. 30, 2014 AMX LLC [Member] USD ($)	Jun. 13, 2014 AMX LLC [Member] USD ($)	Jun. 13, 2014 AMX LLC [Member] Customer Relationships [Member] USD ($)	Jun. 13, 2014 AMX LLC [Member] Tradename [Member] USD ($)	Jun. 13, 2014 AMX LLC [Member] Working Capital Holdback [Member] USD ($)	Jun. 13, 2014 AMX LLC [Member] Technology [Member]	Jun. 13, 2014 AMX LLC [Member] Technology [Member] USD ($)	Jun. 13, 2014 AMX LLC [Member] Backlog [Member]	Jun. 13, 2014 AMX LLC [Member] Backlog [Member] USD ($)	Jun. 13, 2014 AMX LLC [Member] Covenant Not-to-Compete [Member]	Jun. 13, 2014 AMX LLC [Member] Covenant Not-to-Compete [Member] USD ($)	Jun. 13, 2014 AMX LLC [Member] Minimum [Member]	Jun. 13, 2014 AMX LLC [Member] Minimum [Member] Customer Relationships [Member]	Jun. 13, 2014 AMX LLC [Member] Maximum [Member]	Jun. 13, 2014 AMX LLC [Member] Maximum [Member] Customer Relationships [Member]	Oct. 13, 2012 Interchain Solutions Private Limited [Member] USD ($)	Jul. 31, 2012 Interchain Solutions Private Limited [Member] USD ($)	Jun. 30, 2014 Interchain Solutions Private Limited [Member] USD ($)	Jun. 30, 2013 Interchain Solutions Private Limited [Member] USD ($)	Jul. 31, 2012 Interchain Solutions Private Limited [Member] USD ($)	Jul. 31, 2012 Interchain Solutions Private Limited [Member] INR	Jul. 22, 2011 MWM Acoustics LLC [Member] USD ($)	Dec. 31, 2012 MWM Acoustics LLC [Member] USD ($)	Jun. 30, 2014 MWM Acoustics LLC [Member] USD ($)	Jun. 30, 2013 MWM Acoustics LLC [Member] USD ($)	Jun. 30, 2012 MWM Acoustics LLC [Member] USD ($)	Jul. 22, 2011 MWM Acoustics LLC [Member] USD ($)	Jul. 22, 2011 MWM Acoustics LLC [Member] Customer Relationships [Member]	Jul. 22, 2011 MWM Acoustics LLC [Member] Customer Relationships [Member] USD ($)	Jul. 22, 2011 MWM Acoustics LLC [Member] Technology [Member]	Jul. 22, 2011 MWM Acoustics LLC [Member] Technology [Member] USD ($)
Business Acquisition [Line Items]
Purchase price								$ 24,400,000	€ 18,000,000																	€ 110,000,000										$ 8,500,000						$ 37,000,000							$ 365,000,000																		$ 800,000	45,000,000						$ 80,000,000
Number of days for working capital adjustment																					45 days	45 days																		120 days							60 days																						60 days
Acquisition earn-out contingent payable																																										3,700,000				800,000			25,000,000			2,000,000																			57,000,000
Number of years expected to occur certain days						1 year 6 months	1 year 6 months																																2 years	1 year 6 months							36 months
Cash paid to acquire entity																					92,800,000	70,600,000																		32,500,000							372,900,000																500,000	300,000					72,000,000	8,000,000
Acquisition earn-out contingent payable								16,400,000	12,000,000																																	38,000,000																									900,000	50,000,000
Preliminary valuation of contingent consideration						900,000	700,000																												1,200,000					6,200,000																													22,100,000			0
Business acquisition date																																									Jun. 17, 2014							Jun. 13, 2014
Goodwill	540,952,000	234,342,000	180,811,000					15,132,000																61,600,000	61,557,000											2,200,000						30,120,000							244,267,000																									79,757,000
Approximate goodwill amount deductible for tax purposes								15,132,000																0																		0							0																									35,600,000
Acquired intangible assets								8,545,000		2,500,000	4,500,000	1,500,000		40,000											36,299,000		13,200,000	700,000	2,300,000	20,100,000								8,700,000				6,400,000		3,100,000	3,300,000				100,730,000	26,500,000	55,700,000			16,900,000		1,500,000		100,000																20,600,000
Acquisition costs incurred						400,000																	2,300,000																		500,000							8,100,000
Approximate useful life				10 months	17 years								1 year		26 months 15 days	62 months 15 days	2 months 15 days	38 months 15 days	86 months 15 days	26 months 15 days								2 years	4 months			6 years		7 years			5 years						7 years										5 years		2 months		3 years			2 years		9 years													10 years		4 years
Holdback Amounts in escrow																																																	27,000,000
Adjustment resulting in reduction to the purchase price																					2,000,000																										7,900,000
Purchase price inventories								2,927,000																3,700,000	41,104,000																	7,587,000						4,700,000	30,032,000																									1,062,000
Property, plant and equipment								656,000																4,500,000	9,421,000																	2,928,000						3,000,000	28,499,000																									273,000
Fair value amortized estimated lives						8 months 15 days	8 months 15 days																								12 months		4 years														4 months												5 years		35 years
Payment for estimated net debt adjustment						800,000	600,000														50,500,000
Additional payment								600,000	500,000
Percentage of indemnification holdback								12.00%	12.00%
Adjustment to Inventories						600,000
Financial targets achievement period end																																																																	September 1, 2013 and September 2, 2014,						June 30, 2014
Contingent consideration related to earn-out																																																																	200,000	300,000
Goodwill																																																																			600,000							79,800,000
Acquired intangible assets																																																																			400,000									19,200,000		1,400,000
Deferred tax liability																																						2,200,000
Accrued working capital adjustments																																																																					100,000
Acquisition costs incurred																																																																									$ 900,000