Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Goodwill [Line Items] | |||
| Impairment losses | $ 2,198,000 | $ 2,000,000 | $ 1,300,000 |
| Goodwill | 238,330,000 | 237,992,000 | $ 76,015,000 |
| Goodwill, Acquired During Period | 0 | 162,318,000 | |
| Goodwill, Purchase Accounting Adjustments | (338,000) | ||
| Goodwill impairment loss | $ 0 | ||
| Wireless Infrastructure Backhaul Business of Broadcom Corporation [Member] | |||
| Goodwill [Line Items] | |||
| Goodwill, Purchase Accounting Adjustments | (341,000) | ||
| Indefinite-lived Intangible Assets [Member] | |||
| Goodwill [Line Items] | |||
| Impairment losses | $ 2,000,000 | ||
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- 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://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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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://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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