v2.4.0.8

Balance Sheet Components (Narrative) (Details) (USD $) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 29, 2013 | Sep. 30, 2012 | Sep. 29, 2013 | Sep. 30, 2012 | Dec. 31, 2012
Balance Sheet Components [Line Items] |  |  |  |  |
Cost method investment | $ 1,322,000 |  | $ 1,322,000 |  | $ 1,322,000
Cost-method Investments, Other than Temporary Impairment | 0 | 0 | 0 | 0 |
Depreciation | 4,900,000 | 3,200,000 | 12,700,000 | 8,700,000 |
Acquired Indefinite-lived Intangible Asset, Amount |  |  | 9,500,000 |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill) | 100,000 |  | 100,000 |  | 1,000,000
Amortization expense | 4,500,000 | 1,400,000 | 11,000,000 | 3,400,000 |
Goodwill, Acquired During Period |  |  | 55,036,000 |  |
Goodwill, Impairment Loss | 0 | 0 | 0 | 0 |
Impairment charges | 2,000,000 | 0 | 2,000,000 | 0 |
Minimum [Member] |  |  |  |  |
Balance Sheet Components [Line Items] |  |  |  |  |
Available-for-sale Securities, Maturity Period ( in months) |  |  | 3 months |  |
Maximum [Member] |  |  |  |  |
Balance Sheet Components [Line Items] |  |  |  |  |
Available-for-sale Securities, Maturity Period ( in months) |  |  | 12 months |  |
Retail [Member] |  |  |  |  |
Balance Sheet Components [Line Items] |  |  |  |  |
Goodwill, Acquired During Period |  |  | 0 |  |
Commercial [Member] |  |  |  |  |
Balance Sheet Components [Line Items] |  |  |  |  |
Goodwill, Acquired During Period |  |  | 1,195,000 |  |
Service Provider [Member] |  |  |  |  |
Balance Sheet Components [Line Items] |  |  |  |  |
Goodwill, Acquired During Period |  |  | 53,841,000 |  |
Non-Patent [Member] |  |  |  |  |
Balance Sheet Components [Line Items] |  |  |  |  |
Acquired Finite-lived Intangible Asset, Amount |  |  | 64,200,000 |  |
Patents [Member] |  |  |  |  |
Balance Sheet Components [Line Items] |  |  |  |  |
Acquired Finite-lived Intangible Asset, Amount |  |  | 300,000 |  |
Sierra Wireless AirCard Business [Member] |  |  |  |  |
Balance Sheet Components [Line Items] |  |  |  |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill) | 100,000 |  | 100,000 |  |
Goodwill, Purchase Accounting Adjustments |  |  | 500,000 |  |
Impairment charges |  |  | 2,000,000 |  |
Sierra Wireless AirCard Business [Member] | In-Process Research and Development [Member] |  |  |  |  |
Balance Sheet Components [Line Items] |  |  |  |  |
In Process Research and Development achieving technological feasibility | 7,400,000 |  | 7,400,000 |  |
Future Cost to Complete In-Process Research and Development | $ 400,000 |  | $ 400,000 |  |

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