Fair Value of Acquired Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 48,726	$ 38,725
Accumulated Amortization	(13,860)	(13,642)
Net Carrying Amount	34,866	25,083
Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	36,570	26,770
Accumulated Amortization	(7,187)	(9,217)
Net Carrying Amount	29,383	17,553
Weighted Average Useful Life	6 years 9 months 18 days	6 years 10 months 24 days
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,500	800
Accumulated Amortization	(1,347)	(588)
Net Carrying Amount	153	212
Weighted Average Useful Life	1 year	2 years
Micronetics [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	18,500
Accumulated Amortization	(3,891)
Net Carrying Amount	14,609
Weighted Average Useful Life	5 years 7 months 6 days
Micronetics [Member] | Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	17,000
Accumulated Amortization	(2,544)
Net Carrying Amount	14,456
Weighted Average Useful Life	6 years
Micronetics [Member] | Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,500
Accumulated Amortization	(1,347)
Net Carrying Amount	$ 153
Weighted Average Useful Life	1 year