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Net Income Per Share (Details 1) - $ / shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Earnings Per Share [Abstract] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 12,235 | 14,017 | 12,132 | 12,182
Dilutive securities | 516,000 | 608,000 | 546,000 | 691,000
Diluted (in shares) | 21,730,000 | 21,556,000 | 21,735,000 | 21,561,000
Basic (in dollars per share) | $ 1.47 | $ 1.19 | $ 3.93 | $ 2.91
Diluted (in dollars per share) | $ 1.43 | $ 1.16 | $ 3.83 | $ 2.82

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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=124432515&loc=d3e3550-109257 + Details
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