Acquisitions - Schedule of Assets Acquired and Liabilities Assumed. High Power Acquisition (Details) - USD ($) $ in Thousands |
Dec. 31, 2018 |
Dec. 31, 2017 |
Apr. 21, 2017 |
Dec. 31, 2016 |
|---|---|---|---|---|
| Business Acquisition [Line Items] | ||||
| Goodwill | $ 101,245 | $ 99,811 | $ 88,727 | |
| Higher Power | ||||
| Business Acquisition [Line Items] | ||||
| Property, plant and equipment | $ 1,744 | |||
| Goodwill | 643 | |||
| Total assets acquired | 4,000 | |||
| Customer relationships | Higher Power | ||||
| Business Acquisition [Line Items] | ||||
| Identifiable intangible assets | $ 1,613 |
| X | ||||||||||
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets And Goodwill, Total No definition available.
|
| X | ||||||||||
- 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.
|
| X | ||||||||||
- Definition The amount of identifiable intangible assets recognized as of the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of property, plant, and equipment recognized as of the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| 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://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|