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Shareholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2019
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | The changes, pretax and net of tax, in each component of accumulated other comprehensive loss (AOCL) consisted of the following:
| Losses on Cash Flow Hedges | Unrealized Gains on Marketable Securities | Foreign Currency Translation Adjustments | Changes in Retirement Plans’ Funded Status | AOCL
December 31, 2018 | $ | (71 | ) | $ | — |  | $ | 102 |  | $ | (3,809 | ) | $ | (3,778 | )
Other comprehensive income, pretax | 68 |  | — |  | 156 |  | 122 |  | 346 |
Provision for income tax, net | (16 | ) | — |  | — |  | (28 | ) | (44 | )
Other comprehensive income, net of tax | 52 |  | — |  | 156 |  | 94 |  | 302 |
June 30, 2019 | $ | (19 | ) | $ | — |  | $ | 258 |  | $ | (3,715 | ) | $ | (3,476 | )
December 31, 2017 | $ | (94 | ) | $ | 19 |  | $ | 402 |  | $ | (3,147 | ) | $ | (2,820 | )
Cumulative-effect adjustments* | (4 | ) | (19 | ) | — |  | (615 | ) | (638 | )
Other comprehensive loss, pretax | (21 | ) | — |  | (215 | ) | 163 |  | (73 | )
Provision for income tax, net | 7 |  | — |  | — |  | (34 | ) | (27 | )
Other comprehensive loss, net of tax | (14 | ) | — |  | (215 | ) | 129 |  | (100 | )
July 1, 2018 | $ | (112 | ) | $ | — |  | $ | 187 |  | $ | (3,633 | ) | $ | (3,558 | )
* Reflects the cumulative effects of ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, and ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which we adopted on January 1, 2018.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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