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Acquisitions (SAT) - Additional Information (Detail) - USD ($) |  | 12 Months Ended
--- | --- | ---
Sep. 26, 2014 | Dec. 31, 2015 | Dec. 31, 2014
Business Acquisition [Line Items] |  |  |
Adjustments to fair value of earn-out payable |  | $ 11,222,000 |
SAT Technology, Inc. ("SAT") [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Equity interests acquired | 100.00% |  |
Cash paid on acquisition | $ 1,400,000 |  |
Cash held back | 200,000 |  |
Adjustments to fair value of earn-out payable | $ 1,000,000 | 0 |
First year estimated earn-out payable |  | 300,000 | $ 300,000
Remainder of estimated earn-out payable |  | 700,000 | 700,000
Revenue from acquired entity |  | 2,300,000 | 1,000,000
Income from acquired entity |  | $ (800,000) | $ 0

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