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Business Acquisitions (Schedule of Intangible Assets Acquired) (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended
--- | --- | --- | ---
Aug. 11, 2017 | Apr. 20, 2016 | Dec. 31, 2016
Astro Gaming |  |  |
Business Acquisition [Line Items] |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | $ 52,520 |  |
Total intangible assets | $ 52,520 |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 6 years 9 months 17 days |  |
Jaybird LLC of Salt Lake City |  |  |
Business Acquisition [Line Items] |  |  |
Finite-lived intangible assets acquired |  | $ 47,730 |
Estimated useful life |  | 6 years 1 month 6 days |
Total intangible assets |  | $ 50,280 |
Developed technology | Astro Gaming |  |  |
Business Acquisition [Line Items] |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | $ 12,540 |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 4 years |  |
Developed technology | Jaybird LLC of Salt Lake City |  |  |
Business Acquisition [Line Items] |  |  |
Finite-lived intangible assets acquired |  | $ 18,450 |
Estimated useful life |  | 4 years | 5 years
Customer relationships | Astro Gaming |  |  |
Business Acquisition [Line Items] |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | $ 33,100 |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 8 years |  |
Customer relationships | Jaybird LLC of Salt Lake City |  |  |
Business Acquisition [Line Items] |  |  |
Finite-lived intangible assets acquired |  | $ 19,900 |
Estimated useful life |  | 8 years |
Trade name | Astro Gaming |  |  |
Business Acquisition [Line Items] |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | $ 6,880 |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 6 years |  |
Trade name | Jaybird LLC of Salt Lake City |  |  |
Business Acquisition [Line Items] |  |  |
Finite-lived intangible assets acquired |  | $ 9,380 |
Estimated useful life |  | 6 years |
In-process research & development (IPR&D) | Jaybird LLC of Salt Lake City |  |  |
Business Acquisition [Line Items] |  |  |
Indefinite-lived intangible assets acquired |  | $ 2,550 |

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