Accrued Expenses and Other Current Liabilities (Details) - USD ($)	Jan. 31, 2016	Jul. 31, 2015	Jan. 31, 2015	Jul. 31, 2014
Business Acquisition [Line Items]
Accrued wages and benefits	$ 8,678,000	$ 12,134,000
Accrued warranty obligations	8,624,000	8,638,000	$ 8,295,000	$ 8,618,000
Accrued commissions and royalties	3,031,000	2,398,000
Other	10,246,000	6,300,000
Accrued expenses and other current liabilities	30,579,000	$ 29,470,000
TeleCommunication Systems, Inc.
Business Acquisition [Line Items]
Accrued expenses and other current liabilities	$ 2,193,000