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Debt - Debt Acquired in Acquisition of Herley (Details) (USD $) In Millions, unless otherwise specified			0 Months Ended
	Sep. 30, 2012	Dec. 25, 2011	Mar. 25, 2011 10-year term loan	Sep. 30, 2012 10-year term loan
Debt Instrument [Line Items]
Principal amount outstanding	$ 631.0	$ 631.8	$ 10.0
Maturity period			10 years
Carrying amount	650.7	654.6		6.0
Quarterly installment payment - principal			$ 0.3
Basis spread on variable rate			1.50%

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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