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Employee Stock Purchase and Equity-Based Compensation Plans - Summary of Restricted Stock Outstanding (Details) - $ / shares shares in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Restricted Stock Units (Service Condition) |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Number of shares | 374,819 | 189,090
Weighted Average Grant-Date Fair Value | $ 36.68 | $ 34.15
Restricted Stock Units (Service and Performance Condition) |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Number of shares | 556,966 | 317,550
Weighted Average Grant-Date Fair Value | $ 36.07 | $ 34.02

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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=120381028&loc=d3e5070-113901 + Details
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- Definition Per share or unit weighted-average fair value of 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 (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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