Fair Value Measurements - Additional Information (Detail) € in Millions							12 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 10, 2015 USD ($)	Feb. 26, 2015 USD ($)	Jun. 17, 2014 USD ($)	Oct. 17, 2013 USD ($)	Oct. 17, 2013 EUR (€)	Jun. 30, 2015 USD ($)	Jun. 30, 2015 EUR (€)	Jun. 30, 2014 USD ($)	Apr. 08, 2015 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preliminary valuation of contingent consideration							$ 2,200,000
Red Bend Ltd. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preliminary valuation of contingent consideration	$ 16,700,000		$ 16,700,000
Contingent consideration liability	30,000,000						30,000,000
Duran Audio BV [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preliminary valuation of contingent consideration					$ 900,000	€ 0.7		€ 1.9
Contingent consideration liability	2,200,000						2,200,000
Duran Audio BV [Member] | Previously Reported [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability	900,000						900,000
Duran Audio BV [Member] | Selling, General and Administrative Expense [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Payment towards contingent consideration liability									$ 300,000
Yurbuds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preliminary valuation of contingent consideration				$ 6,800,000
Contingent consideration liability	6,800,000			$ 3,700,000			6,800,000
Yurbuds [Member] | Previously Reported [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability	6,200,000						6,200,000
Symphony Teleca Corporation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preliminary valuation of contingent consideration	24,900,000
Contingent consideration liability										$ 24,900,000
Southern Vision Systems Inc [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preliminary valuation of contingent consideration	0	$ 0
Contingent consideration liability	10,000,000						$ 10,000,000
IPSG/VFX [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preliminary valuation of contingent consideration	$ 5,800,000