Radyne Acquisition-Related Restructuring Plan - Activity of Facility Related Exit Costs (Details) (USD $)	3 Months Ended		6 Months Ended		75 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jul. 31, 2008
Restructuring Reserve [Roll Forward]
Present value of estimated facility-related exit costs, beginning balance			$ 3,773,000		$ 2,100,000	$ 2,100,000
Cash payments made			(550,000)		(6,946,000)
Cash payments received			643,000		7,629,000
Accreted interest recorded	69,000	61,000	135,000	120,000	1,218,000
Present value of estimated facility-related exit costs, ending balance	4,001,000		4,001,000		4,001,000	2,100,000
Amount recorded as accrued expenses and other current liabilities in the Condensed Consolidated Balance Sheet	34,000		34,000		34,000
Amount recorded as other liabilities in the Condensed Consolidated Balance Sheet	$ 3,967,000		$ 3,967,000		$ 3,967,000