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Summary of Significant Accounting Policies (Details) |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 08, 2018 | Feb. 28, 2018 | Dec. 31, 2020 financial_center segment shares | Dec. 31, 2019 shares | Dec. 31, 2018 shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Number of financial centers | financial_center |  |  | 204 |  |
Number of reportable segments | segment |  |  | 1 |  |
Stock split, conversion ratio | 2 | 2 |  |  |
Employee Stock Option |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) | shares |  |  | 653,718 | 0 | 0

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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