Goodwill and Intangibles Assets (Details Textuals) - USD ($) |
3 Months Ended | |||
|---|---|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
Dec. 31, 2017 |
May 12, 2017 |
|
| Impairment of IPR&D assets | $ 0 | |||
| Balance as of December 31, 2017 | 237,810,000 | $ 237,992,000 | ||
| Amortization | 17,014,000 | $ 4,702,000 | ||
| Goodwill, Impairment Loss | 0 | |||
| Impairment of Intangible Assets (Excluding Goodwill) | 0 | |||
| Finite-Lived Intangible Assets [Member] | ||||
| Transfers into developed technology from IPR&D | 0 | |||
| Indefinite-lived Intangible Assets [Member] | ||||
| Transfers into developed technology from IPR&D | 0 | |||
| Exar Corporation [Member] | ||||
| Goodwill, Purchase Accounting Adjustments | $ (182,000) | |||
| Balance as of December 31, 2017 | $ 159,811,000 | |||
| X | ||||||||||
- Definition Transfers into developed technology from IPR&D No definition available.
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| X | ||||||||||
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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