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Summary of Business Organization, Operations and Significant Accounting Policies - Accounting Standards Implementation (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
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New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Cumulative effect of new accounting principle | [1] |  | $ 0 |
Operating Lease Right-of-Use Assets, Net |  | $ 121,527 |  | $ 0
Present value of future minimum lease payments |  | $ 123,499 |  |
Minimum | Accounting Standards Update 2016-02 |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Operating Lease Right-of-Use Assets, Net |  |  | 140,000 |
Maximum | Accounting Standards Update 2016-02 |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Present value of future minimum lease payments |  |  | 147,000 |
Tax Rate Reduction Related To Pension Liability | Accounting Standards Update 2018-02 |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Cumulative effect of new accounting principle |  |  | 700 |
Tax Effect Of Tax Reform On Items Remaining in AOCI, Currency Translation | Accounting Standards Update 2018-02 |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Cumulative effect of new accounting principle |  |  | (1,700) |
Distributions In Excess Of Earnings | Accounting Standards Update 2018-02 |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Cumulative effect of new accounting principle |  |  | $ (1,000) |
[1] | On January 1, 2019, the Company adopted Accounting Standard Update ("ASU") No. 2018-02 "Income Statement-Reporting Comprehensive Income-Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income". Refer to Note 1 - Summary of Business Organization, Operations and Significant Accounting Policies - Recent Accounting Pronouncements for further information.

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