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Credit Losses (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Credit Loss [Line Items] |  |  |  |  |
Cumulative effect of change in accounting principle | $ (757,051) |  | $ (965,819) | $ (1,387,588) | $ (1,434,866)
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Accounts receivable, allowance for credit loss, beginning balance | 2,569 |  |  |  |
Incease to allowance for doubtful accounts | 2,282 |  |  |  |
Recoveries collected | (637) |  |  |  |
Write-offs | (114) |  |  |  |
Currency impact | 39 |  |  |  |
Accounts receivable, allowance for credit loss, ending balance | 5,150 |  |  |  |
Revision of Prior Period, Accounting Standards Update, Adjustment |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Accounts receivable, allowance for credit loss, beginning balance | 1,011 |  |  |  |
Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Credit Loss [Line Items] |  |  |  |  |
Cumulative effect of change in accounting principle |  |  | 2,916 | 29,041 |
Retained Earnings |  |  |  |  |
Credit Loss [Line Items] |  |  |  |  |
Cumulative effect of change in accounting principle | $ (450,876) |  | (518,004) | (922,000) | $ (833,610)
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Credit Loss [Line Items] |  |  |  |  |
Cumulative effect of change in accounting principle |  | $ 2,900 | $ 2,916 | $ 29,041 |
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment | Continuing Operations |  |  |  |  |
Credit Loss [Line Items] |  |  |  |  |
Cumulative effect of change in accounting principle |  | 1,000 |  |  |
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment | Discontinued Operations |  |  |  |  |
Credit Loss [Line Items] |  |  |  |  |
Cumulative effect of change in accounting principle |  | $ 1,900 |  |  |

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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. 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