Shareholders' Equity - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] | |||
| Other Comprehensive (Loss) Income | $ 1,396 | $ 2,142 | $ (430) |
| Foreign Currency Translation Adjustments | |||
| Accumulated Other Comprehensive Income (Loss) [Line Items] | |||
| Other Comprehensive (Loss) Income | (2,691) | 4,132 | (626) |
| Retirement Liability Adjustment | |||
| Accumulated Other Comprehensive Income (Loss) [Line Items] | |||
| Other Comprehensive (Loss) Income | 4,087 | (1,990) | 196 |
| Other Comprehensive (Loss) Income, Before Tax | 5,174 | (2,377) | 301 |
| Tax Benefit (Expense) | $ (1,087) | $ 387 | $ (105) |
| 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 Amount before tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|