Accrued Expenses and Other Current Liabilities (Details) - USD ($)	Apr. 30, 2016	Jul. 31, 2015	Apr. 30, 2015	Jul. 31, 2014
Business Acquisition [Line Items]
Accrued wages and benefits	$ 21,432,000	$ 12,134,000
Accrued legal costs	9,707,000	275,000
Accrued warranty obligations	8,639,000	8,638,000	$ 8,293,000	$ 8,618,000
Accrued acquisition-related costs	8,051,000	69,000
Accrued contract costs	10,941,000	749,000
Accrued commissions and royalties	2,333,000	2,398,000
Other	14,034,000	5,207,000
Accrued expenses and other current liabilities	75,137,000	$ 29,470,000
TeleCommunication Systems, Inc.
Business Acquisition [Line Items]
Change-in-control payments	7,067,000
Acquisition-related professional fees	984,000
TeleCommunication Systems, Inc. | Legacy TCS IP Matters [Member]
Business Acquisition [Line Items]
Accrued legal costs	3,529,000
Preliminary estimated losses from intellectual property matters and contract disputes	$ 4,500,000