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Acquisitions - Narrative (Details) ZAR / shares in Units, $ in Thousands |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Jun. 18, 2015 ZAR ZAR / shares | Jun. 18, 2015 USD ($) | Mar. 27, 2015 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($) | Dec. 31, 2014 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Acquisition-related earn out |  |  |  | $ 1,446 |  | $ 1,446 |  | $ 0
Net revenues |  |  |  | 54,815 | $ 37,270 | 108,309 | $ 85,554 |
Net loss |  |  |  | 9,220 | $ 17,415 | 17,046 | $ 26,396 |
Feeney Wireless |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Net revenues |  |  |  | 11,900 |  | 12,200 |  |
Net loss |  |  |  | (900) |  | (1,300) |  |
DigiCore |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Voting interests acquired | 100.00% |  |  |  |  |  |  |
Acquisition share price (ZAR per share) | ZAR / shares | ZAR 4.40 |  |  |  |  |  |  |
Total purchase price |  | $ 87,000 |  |  |  |  |  |
DigiCore | Maximum |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Cash payments | ZAR 1,094,223,363.20 | $ 88,300 |  |  |  |  |  |
Feeney Wireless |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Total purchase price |  |  | $ 24,800 |  |  | 24,777 |  |
Cash payments |  |  | 9,300 |  |  | 9,268 |  |
Escrow amount and certain other pre-closing adjustments |  |  | 1,500 |  |  |  |  |
Other assumed liabilities |  |  | 500 |  |  | 509 |  |
Future issuance of common stock |  |  | 15,000 |  |  | 15,000 |  |
Maximum contingent earn-out |  |  | $ 25,000 |  |  |  |  |
Period to pay contingent earn-out |  |  | 4 years |  |  |  |  |
Feeney Wireless | Accrued Liabilities |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Acquisition-related earn out |  |  |  | 1,400 |  | 1,400 |  |
Feeney Wireless | General and Administrative Expense |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Acquisition costs |  |  |  | $ 200 |  | $ 800 |  |

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