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Unaudited Quarterly Financial Data (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2019 | Dec. 31, 2019
Gain on disposal |  | $ 33,599
Control Devices [Member] | Non-core Switches and Connector Product [Member] |  |
Gain on disposal | $ 33,599 |

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- Definition Amount of other income that is infrequent in occurrence or unusual in nature. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=114868883&loc=SL114871943-224233 + Details
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- Details
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