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Stock-Based Compensation - Unrecognized cost and 2020 Plan (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2020 | Apr. 30, 2020 | Dec. 31, 2019
Stock-Based Compensation |  |  |
Additional paid-in capital | $ 3,415,784 |  | $ 3,412,509
2020 Plan | Subsequent Event |  |  |
Unrecognized compensation |  |  |
Number of shares authorized for issuance |  | 8,500,000 |
Reduction in number of shares available for issuance for each stock-settled award granted |  | 1 |
Cash Settled Restricted Stock Units and Cash Settled Performance Units |  |  |
Stock-Based Compensation |  |  |
Non-vested awards at the end of the period (in shares) | 529,000 |  |
Restricted Stock and Stock-settled Performance Units [Member] |  |  |
Stock-Based Compensation |  |  |
Non-vested awards at the end of the period (in shares) | 2,539,000 |  |
Restricted Stock, Restricted Stock Units, Performance Units, Cash Settled Restricted Stock Units and Cash Settled Performance Units |  |  |
Stock-Based Compensation |  |  |
Non-vested awards at the end of the period (in shares) | 3,068,000 |  | 2,022,000
Unrecognized compensation |  |  |
Expected unrecognized compensation cost related to unvested awards (in dollars) | $ 21,500 |  |
Weighted-average period over which the expected unrecognized compensation cost related to unvested stock options will be recognized | 2 years 2 months 12 days |  |

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- Definition Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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