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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2019
Earnings Per Share |
Summary of basic and diluted earnings per share |
|  | Year Ended December 31,
|  | 2019 |  | 2018
Numerator: |  |  |  |  |  |
Net income attributable to Cactus Inc.—basic |  | $ | 85,612 |  | $ | 51,683
Net income attributable to non-controlling interest (1) |  |  | 56,012 |  |  | —
Net income attributable to Cactus Inc.—diluted (1) |  | $ | 141,624 |  | $ | 51,683
Denominator: |  |  |  |  |  |
Weighted average Class A shares outstanding—basic |  |  | 44,983 |  |  | 32,329
Effect of dilutive shares (2) |  |  | 30,370 |  |  | 366
Weighted average Class A shares outstanding—diluted (2) |  |  | 75,353 |  |  | 32,695
Earnings per Class A share—basic |  | $ | 1.90 |  | $ | 1.60
Earnings per Class A share—diluted (1) (2) |  | $ | 1.88 |  | $ | 1.58
| (1) |  | Under the if-converted method for the twelve months ended December 31, 2019, the numerator is adjusted in the calculation of diluted earnings per share to include $73.7 million of additional pre-tax income attributable to non-controlling interest adjusted for a corporate effective tax rate of 24%.
| (2) |  | Diluted earnings per share for the year ended December 31, 2018 excludes 37.2 million shares of Class B common stock as the effect would be anti-dilutive.

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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://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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