Acquisitions - Additional Information (Detail)			1 Months Ended						3 Months Ended	9 Months Ended				9 Months Ended		1 Months Ended		9 Months Ended		1 Months Ended	9 Months Ended		9 Months Ended
	Jun. 30, 2012 USD ($)	Jul. 22, 2011 USD ($)	Jul. 22, 2011 MWM Acoustics [Member] USD ($) D	Dec. 31, 2012 MWM Acoustics [Member] USD ($)	Mar. 31, 2013 Interchain [Member] USD ($)	Oct. 13, 2012 Interchain [Member] USD ($)	Jul. 31, 2012 Interchain [Member] USD ($)	Jul. 31, 2012 Interchain [Member] INR	Mar. 31, 2013 Martin [Member] USD ($)	Mar. 31, 2013 Martin [Member] USD ($)	Feb. 28, 2013 Martin [Member] USD ($)	Feb. 28, 2013 Martin [Member] EUR (€)	Dec. 19, 2012 Martin [Member] EUR (€) D	Mar. 31, 2013 Martin [Member] Minimum [Member]	Mar. 31, 2013 Martin [Member] Maximum [Member]	Jul. 22, 2011 Customer Relationships [Member] USD ($)	Mar. 31, 2013 Customer Relationships [Member] Martin [Member] USD ($)	Mar. 31, 2013 Customer Relationships [Member] Martin [Member] Minimum [Member]	Mar. 31, 2013 Customer Relationships [Member] Martin [Member] Maximum [Member]	Jul. 22, 2011 Technology [Member] USD ($)	Mar. 31, 2013 Technology [Member] Martin [Member] USD ($)	Mar. 31, 2013 Non-amortized indefinite tradename [Member] Martin [Member] USD ($)	Mar. 31, 2013 Backlog [Member] Martin [Member] USD ($)
Business Acquisition [Line Items]
Purchase price			$ 80,000,000				$ 800,000	45,000,000					€ 110,000,000
Number of days for working capital adjustment			60										45
Cash paid on acquisition			72,000,000	8,000,000		500,000	300,000				92,800,000	70,600,000
Purchase price assumption approximate debt											50,500,000
Goodwill		79,800,000	79,757,000				600,000		57,700,000	57,700,000	57,660,000
Acquired intangible assets																						20,100,000
Intangibles			20,600,000				400,000				36,299,000					19,200,000	13,200,000			1,400,000	700,000		2,300,000
Approximate useful life																10 years		6 years	7 years	4 years	2 years		4 months
Purchase price inventories			1,062,000						3,700,000	3,700,000	47,735,000
Purchase price property, plant and equipment, net			273,000						4,500,000	4,500,000	9,420,000
Fair value amortized estimated lives														12 months	4 years
Acquisition costs incurred									2,300,000	2,300,000
Acquisition earn-out contingent payable			57,000,000				900,000	50,000,000
Financial targets achievement period end			June 30, 2014				September 1, 2013 and September 2, 2014	September 1, 2013 and September 2, 2014
Contingent consideration related to earn-out					300,000
Accrued working capital adjustments			100,000
Preliminary valuation of contingent consideration			22,100,000	9,600,000
Approximate goodwill amount deductible for tax purposes		35,600,000
Acquisition costs incurred	$ 900,000