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Earnings (Loss) Per Share (Tables) | 12 Months Ended
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Dec. 31, 2020
Earnings (Loss) Per Share [Abstract] |
Computation Of Basic And Diluted Earnings (Loss) Per Share |
(Dollars in thousands, except share and per share data) |  | 2020 |  | 2019 |  | 2018
Numerator: |  |  |  |  |  |  |  |  |
Net income (loss) attributable to RDI common stockholders |  | $ | (65,200) |  | $ | (26,429) |  | $ | 14,034
Denominator: |  |  |  |  |  |  |  |  |
Weighted average shares of common stock – basic |  |  | 21,749,155 |  |  | 22,631,754 |  |  | 22,991,277
Weighted average dilutive impact of stock-based awards |  |  | 466,356 |  |  | 152,368 |  |  | 217,714
Weighted average shares of common stock – diluted |  |  | 22,215,511 |  |  | 22,784,122 |  |  | 23,208,991
Basic earnings (loss) per share attributable to RDI common stockholders |  | $ | (3.00) |  | $ | (1.17) |  | $ | 0.61
Diluted earnings (loss) per share attributable to RDI common stockholders |  | $ | (3.00) |  | $ | (1.17) |  | $ | 0.60
Awards excluded from diluted earnings (loss) per share |  |  | 674,676 |  |  | 516,010 |  |  | 276,681

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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