Divestiture Activities - Narrative (Details) - Held for Sale - USD ($) |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Feb. 13, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
|
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |||
| Maximum total earnout proceeds | $ 35,000,000 | ||
| Test Systems | |||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |||
| Impairment loss | $ 0 | ||
| Test Systems | Subsequent Event | |||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |||
| Total cash proceeds of divesture | $ 103,500,000 | ||
| Cash at closing | 100,000,000.0 | ||
| Sale of inventory | 3,500,000 | ||
| Gain on sale, net of tax | $ 80,000,000 | ||
| Income taxes from divesture | $ 22,000,000 |
| X | ||||||||||
- Definition Disposal Group, Including Discontinued Operation, Impairment Charges No definition available.
|
| X | ||||||||||
- Definition Proceeds From Earnout No definition available.
|
| X | ||||||||||
- Definition Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of tax expense (benefit) on gain (loss) not previously recognized resulting from the disposal of a discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount classified as cash and cash equivalents attributable to disposal group held for sale or disposed of. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount classified as inventory attributable to disposal group, expected to be disposed of within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| 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 This element represents the cash inflow during the period from the sale of a component of the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|