Equity-Based Compensation (Cash Paid to Settle Liability Awards) (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
MSPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units credited	$ 15,401	$ 6,543	$ 5,232
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units credited (in shares)	57,046	61,369	66,843
Restricted stock units balance, vested and unvested (in shares)	231,343	415,760	387,870
Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
MSPP expense, in thousands	$ 4,518	$ 2,699	$ 4,809

Management Stock Purchase Plan, Compensation Expense

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Amount of cash paid to settle liability for award under share-based payment arrangement.

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Net number of non-option equity instruments granted to participants.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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