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Equity-Based Compensation (Cash Paid to Settle Liability Awards) (Details) - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
MSPP |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Restricted stock units credited | $ 6,543 | $ 5,232 | $ 6,058
Restricted stock units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Restricted stock units credited (in shares) | 61,369 | 66,843 | 84,299
Restricted stock units balance, vested and unvested (in shares) | 415,760 | 387,870 | 389,189
Management |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
MSPP expense, in thousands | $ 2,699 | $ 4,809 | $ 2,432

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- Definition Amount of cash paid to settle liability for award under share-based payment arrangement. + 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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