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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 |  |  |

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