| **Consolidated Statement of Equity (Statement) - USD ($) $ in Thousands**                                  | Total       | Parent [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Treasury Stock, Common [Member] | Retained Earnings [Member] | Treasury Stock [Member] |
|------------------------------------------------------------------------------------------------------------|-------------|-----------------|-----------------------|-------------------------------------|---------------------------------|----------------------------|-------------------------|
| **Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]**             |        |            |                  |                                |                            |                       |                    |
| Shares, Issued                                                                                             |        |            | (66,148,609)          |                                |                            |                       | 45,220                  |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross        |        |            | 112,626               |                                |                            |                       |                    |
| **Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract]**                             |        |            |                  |                                |                            |                       |                    |
| Purchase of treasury shares                                                                                |        |            |                  |                                |                            |                       | 41,787                  |
| Issuance of treasury shares                                                                                |        |            | (64,372)              |                                |                            |                       | 64,372                  |
| Stockholders' Equity Beginning, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2018 |        | $ 2,526,708     | $ 661                 | $ 2,519,423                         |                            | $ 8,727                    | $ (2,103)               |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**                                             |        |            |                  |                                |                            |                       |                    |
| Purchase of treasury shares                                                                                |        | (1,460)         |                  |                                |                            |                       | (1,460)                 |
| Share-based Compensation expense                                                                           | $ (4,683)   | (4,683)         | 0                     | (2,136)                             |                            |                       | (2,547)                 |
| Issuance of treasury shares                                                                                |        | 0               | (1)                   | 1                                   |                            |                       | 0                       |
| Net income (loss)                                                                                          | (120,176)   | (120,176)       |                  |                                |                            | (120,176)                  |                    |
| Stockholders' Equity Ending, Including Portion Attributable to Noncontrolling Interest at Mar. 31, 2019    |        | 2,409,755       | $ 662                 | 2,521,558                           |                            | (111,449)                  | $ (1,016)               |
| **Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]**             |        |            |                  |                                |                            |                       |                    |
| Shares, Issued                                                                                             |        |            | (66,196,863)          |                                |                            |                       | (22,635)                |
| Shares, Issued                                                                                             |        |            | (61,652,412)          |                                |                            |                       | 34,922                  |
| **Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract]**                             |        |            |                  |                                |                            |                       |                    |
| Purchase of treasury shares                                                                                |        |            |                  |                                | 306,185                         |                       |                    |
| Issuance of treasury shares                                                                                |        |            | (69,327)              |                                | 69,327                          |                       |                    |
| Stockholders' Equity Beginning, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2019 |        | 2,335,507       | $ 617                 | 2,384,309                           |                            | (47,945)                   | $ (1,474)               |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**                                             |        |            |                  |                                |                            |                       |                    |
| Purchase of treasury shares                                                                                |        | (7,693)         |                  |                                | $ (7,693)                       |                       |                    |
| Share-based Compensation expense                                                                           | (5,672)     | 5,672           |                  | 3,713                               |                            |                       | (1,958)                 |
| Issuance of treasury shares                                                                                |        |            | (1)                   | 0                                   | 0                               |                       |                    |
| Net income (loss)                                                                                          | $ (465,015) | (465,015)       |                  |                                |                            | (465,015)                  |                    |
| Stockholders' Equity Ending, Including Portion Attributable to Noncontrolling Interest at Mar. 31, 2020    |        | 2,859,964       | $ 994                 | 3,372,711                           |                            | $ (512,960)                | $ (781)                 |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**                                             |        |            |                  |                                |                            |                       |                    |
| Stock Issued During Period, Shares, Acquisitions                                                           |        |            | 39,182,045            |                                |                            |                       |                    |
| Stock Issued During Period, Value, Acquisitions                                                            |        | 1,015,312       | $ (391)               | 1,014,921                           |                            |                       |                    |
| Treasury Stock, Shares, Retired                                                                            |        |            | (251,287)             |                                |                            |                       | 251,287                 |
| Treasury Stock, Retired, Cost Method, Amount                                                               |        |            | $ (3)                 | 6,425                               | $ (6,428)                       |                       |                    |
| Stock Repurchased During Period, Shares                                                                    |        |            |                  |                                | (1,266,000)                     |                       |                    |
| Stock Repurchased and Retired During Period, Shares                                                        |        |            | (1,266,000)           |                                | 1,266,000                       |                       |                    |
| Stock Repurchased During Period, Value                                                                     |        | $ (23,819)      |                  |                                | $ (23,819)                      |                       |                    |
| Stock Repurchased and Retired During Period, Value                                                         |        |            | $ (12)                | $ (23,807)                          | $ 23,819                        |                       |                    |
| Stock Issued During Period, Shares, Issued for Services                                                    |        |            | 190,279               |                                |                            |                       |                    |
| Shares, Issued                                                                                             |        |            | (99,438,122)          |                                |                            |                       | (20,493)                |

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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
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| - Definition
Amount of noncash expense for share-based payment arrangement.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Gross number of share options (or share units) granted during the period.
+ References
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| - Definition
Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.
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| - Definition
Number of shares of stock issued during the period pursuant to acquisitions.
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| - Definition
Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.
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| - Definition
Number of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement.
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| - Definition
Value of stock issued pursuant to acquisitions during the period.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Value of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement.
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| - Definition
Number of shares that have been repurchased and retired during the period.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.
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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. Alternate caption for the concept is permanent equity.
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No definition available.
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| - Definition
Amount of decrease of par value, additional paid in capital (APIC) and retained earnings of common and preferred stock retired from treasury when treasury stock is accounted for under the cost method.
+ References
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| - Definition
Number of shares that have been repurchased during the period and are being held in treasury.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of shares of common and preferred stock retired from treasury during the period.
+ References
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| - References
No definition available.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.
+ References
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