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Stock Based Compensation - Schedule of Performance Stock Plan and 2010 Stock Incentive Plan (Details) - 2010 Stock Incentive Plan - shares | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance-based restricted stock granted | 822,982 | 1,014,269 | 1,123,408
Time-Based |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock awarded | 148,015 | 797,778 | 454,313
Performance Based |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance-based restricted stock granted | 822,982 | 1,014,269 | 1,123,408
Performance Shares |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock awarded | 1,880,512 | 1,954,983 | 2,489,905

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- Definition Number of shares issued 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 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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