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Employee Deferred Compensation Plan Obligations (Tables) | 12 Months Ended
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Dec. 31, 2020
Deferred Compensation Plans [Abstract] |
contribution plans and nonqualified plans | The following table presents the Company’s compensation expense related to its qualified defined contribution plans and nonqualified plans (in thousands):
|  | Year Ended December 31,
|  | 2020 |  |  | 2019 |  | 2018
Contribution expense |  | $ | 42,092 |  |  |  | $ | 26,122 |  |  | $ | 24,184 |
Employee deferred compensation expense (income) related to changes in the fair value of trust assets |  | 75,188 |  |  |  | 54,917 |  |  | (11,486) |
|  | $ | 117,280 |  |  |  | $ | 81,039 |  |  | $ | 12,698 |

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- Definition contribution plans and nonqualified plans [Table Text Block] + References No definition available. + Details
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- Definition Deferred Compensation Plans + References No definition available. + Details
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