Fair Value Measurements (Narrative) (Detail) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Weighted average cost of capital			19.00%
Discount rate			12.60%
Reduction in contingent consideration	$ (12,500,000)	$ 0	$ (12,500,000)	$ 0
Selling General And Administrative Expense [Member]
Contingent consideration related to acquisition	9,600,000		9,600,000
Reduction in contingent consideration	(12,500,000)		(12,500,000)
Interchain Solution Private Limited [Member]
Contingent consideration related to earn-out	300,000		300,000
MWM Acoustics [Member]
Contingent consideration related to acquisition	$ 22,100,000		$ 22,100,000