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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
Accounting Policies [Abstract] |
Schedule of Amortization Expense Related to the SEI Wealth Platform | The Company currently expects to recognize amortization expense related to all capitalized software development costs placed into service as of December 31, 2020 each year from 2021 through 2025 as follows:
Year | Expected Amortization Expense Related to Capitalized Software
2021 | $ | 52,466 |
2022 | 37,621 |
2023 | 18,838 |
2024 | 18,838 |
2025 | 18,838 |
Schedule of Calculation of Basic and Diluted Earnings Per Share | The calculations of basic and diluted earnings per share for 2020, 2019 and 2018 are:
|  | 2020 |  | 2019 |  | 2018
Net income |  | $ | 447,286 |  |  | $ | 501,426 |  |  | $ | 505,868 |
Shares used to compute basic earnings per common share |  | 146,709,000 |  |  | 151,540,000 |  |  | 156,579,000 |
Dilutive effect of stock options |  | 2,294,000 |  |  | 3,361,000 |  |  | 4,653,000 |
Shares used to compute diluted earnings per common share |  | 149,003,000 |  |  | 154,901,000 |  |  | 161,232,000 |
Basic earnings per common share |  | $ | 3.05 |  |  | $ | 3.31 |  |  | $ | 3.23 |
Diluted earnings per common share |  | $ | 3.00 |  |  | $ | 3.24 |  |  | $ | 3.14 |

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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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