Radyne Acquisition-Related Restructuring Plan - Activity of Facility Related Exit Costs (Details) (USD $)	3 Months Ended		9 Months Ended		78 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 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			(829,000)		(7,225,000)
Cash payments received			967,000		7,953,000
Accreted interest recorded	71,000	62,000	206,000	182,000	1,289,000
Present value of estimated facility-related exit costs, ending balance	4,117,000		4,117,000		4,117,000	2,100,000
Amount recorded as accrued expenses and other current liabilities in the Condensed Consolidated Balance Sheet	467,000		467,000		467,000
Amount recorded as other liabilities in the Condensed Consolidated Balance Sheet	$ 3,650,000		$ 3,650,000		$ 3,650,000