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Note 15 - Net Income Per Common Share (Tables) | 9 Months Ended
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Sep. 30, 2022
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income - basic |  | $ | 70,607 |  |  | $ | 52,255 |  |  | $ | 311,328 |  |  | $ | 226,989 |
Add: Convertible Notes interest expense, net of tax |  |  | 1,561 |  |  |  | 1,561 |  |  |  | 4,655 |  |  |  | 3,575 |
Net income - diluted |  | $ | 72,168 |  |  | $ | 53,816 |  |  | $ | 315,983 |  |  | $ | 230,564 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding - basic |  |  | 5,836,731 |  |  |  | 6,019,517 |  |  |  | 5,933,372 |  |  |  | 6,015,450 |
Effect of dilutive equity-based compensation awards(1) |  |  | 20,278 |  |  |  | 37,110 |  |  |  | 20,335 |  |  |  | 38,257 |
Effect of dilution from if-converted Convertible Notes(2) |  |  | 404,248 |  |  |  | 404,248 |  |  |  | 404,248 |  |  |  | 309,029 |
Weighted average common shares outstanding - diluted |  |  | 6,261,257 |  |  |  | 6,460,875 |  |  |  | 6,357,955 |  |  |  | 6,362,736 |
Net Income per Common Share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 12.10 |  |  | $ | 8.68 |  |  | $ | 52.47 |  |  | $ | 37.73 |
Diluted |  | $ | 11.53 |  |  | $ | 8.33 |  |  | $ | 49.70 |  |  | $ | 36.24 |
Supplemental Net Income per Common Share Disclosure: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Anti-dilutive shares from equity-based compensation awards(1) |  |  | 13,068 |  |  |  | 3,119 |  |  |  | 13,068 |  |  |  | 3,119 |

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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 https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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