Business Combinations (Details) (Hypertronics Pte Ltd [Member], USD $)	12 Months Ended		6 Months Ended			3 Months Ended
	Oct. 01, 2011	Jan. 05, 2011	Mar. 31, 2012 Minimum [Member] Y	Mar. 31, 2012 Maximum [Member] Y	Jan. 05, 2011 Existing technology [Member]	Mar. 31, 2012 In-process Research and Development [Member] projects products	Jan. 05, 2011 In-process Research and Development [Member]	Jan. 05, 2011 Customer Lists [Member]	Jan. 05, 2011 Trade Names [Member]	Jan. 05, 2011 Noncompete Agreements [Member]
Business Acquisition [Line Items]
Business acquisition, cash paid		$ 14,499,000
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life			2	6
Number of interrelated projects acquired						7
Number of products that interrelated projects are expected to be converted into						1
Business Acquisition, Number of Projects Discontinued						1
Unsuccessful Business Combination Costs						200,000
Business Acquisition, Number of Projects Completed at Period End						0
Expensed acquisition-related costs	600,000
Business Acquisition, Purchase Price Allocation [Abstract]
Tangible assets		4,617,000
Goodwill		5,807,000
Intangible assets:					3,120,000		570,000	1,880,000	410,000	60,000
Liabilities assumed		(1,965,000)
Total		$ 14,499,000