Radyne Acquisition-Related Restructuring Plan - Activity of Facility Related Exit Costs (Details) - USD ($)	12 Months Ended			96 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2016
Restructuring Reserve [Roll Forward]
Present value of estimated facility-related exit costs, beginning balance	$ 4,235,000			$ 2,100,000
Cash payments made	(1,509,000)			(9,013,000)
Cash payments received	323,000			8,600,000
Accreted interest recorded	278,000	$ 279,000	$ 247,000	1,640,000
Present value of estimated facility-related exit costs, ending balance	3,327,000	$ 4,235,000		3,327,000
Amount recorded as accrued expenses and other current liabilities in the Consolidated Balance Sheet	1,386,000			1,386,000
Amount recorded as other liabilities in the Consolidated Balance Sheet	$ 1,941,000			$ 1,941,000