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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Schedule of Weighted Average Number of Shares Used To Compute Basic and Diluted EPS | The weighted average number of shares used to compute basic and diluted EPS were:
|  | Three Months Ended |
|  | March 31, 2021 |  |  | March 31, 2020 |
Basic weighted average number of shares outstanding |  |  | 102,375,923 |  |  |  | 100,669,693 |
Stock-based awards |  |  | 573,048 |  |  |  | 229,631 |
Convertible senior notes |  |  | 8,916,530 |  |  |  | - |
Diluted weighted average number of shares outstanding |  |  | 111,865,501 |  |  |  | 100,899,324 |
Net Income Available to Shareholders to Compute Basic and Diluted EPS | The net income available to shareholders to compute basic and diluted EPS were (in thousands):
|  | Three Months Ended |
|  | March 31, 2021 |  |  | March 31, 2020 |
Net income attributable to Parsons Corporation |  |  | 9,039 |  |  |  | 12,973 |
Convertible senior notes if-converted method interest adjustment |  |  | 528 |  |  |  | - |
Diluted net income attributable to Parsons Corporation |  |  | 9,567 |  |  |  | 12,973 |

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- Definition Tabular disclosure of the effect of income (loss) on an entity's diluted earnings per share. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1278-109256 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=120380238&loc=d3e4984-109258 + Details
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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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