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Stockholders' Equity and Earnings Per Share | 9 Months Ended
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Sep. 30, 2019
Stockholders' Equity and Earnings Per Share [Abstract] |
Stockholders' Equity and Earnings Per Share | Stockholders’ Equity and Earnings Per Share Warrant — The Company acquired MetroCorp Bancshares, Inc., on January 17, 2014. Prior to the acquisition, MetroCorp Bancshares, Inc. had outstanding warrants to purchase 771,429 shares of its common stock. Upon the acquisition, the rights of the warrant holders were converted into the rights to acquire 230,282 shares of East West’s common stock until January 16, 2019. All warrants were exercised on January 7, 2019. Earnings Per Share — Basic EPS is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding during each period. Diluted EPS is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding during each period, plus any incremental dilutive common share equivalents calculated for warrants and RSUs outstanding using the treasury stock method. The following table presents the EPS calculations for the three and nine months ended September 30, 2019 and 2018:
($ and shares in thousands, except per share data) |  | Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Basic: |  |  |  |  |  |  |  |
Net income |  | $ | 171,416 |  |  | $ | 171,302 |  |  | $ | 485,820 |  |  | $ | 530,683 |
Basic weighted-average number of shares outstanding |  | 145,559 |  |  | 144,921 |  |  | 145,455 |  |  | 144,829 |
Basic EPS |  | $ | 1.18 |  |  | $ | 1.18 |  |  | $ | 3.34 |  |  | $ | 3.66 |
Diluted: |  |  |  |  |  |  |  |
Net income |  | $ | 171,416 |  |  | $ | 171,302 |  |  | $ | 485,820 |  |  | $ | 530,683 |
Basic weighted-average number of shares outstanding |  | 145,559 |  |  | 144,921 |  |  | 145,455 |  |  | 144,829 |
Diluted potential common shares (1) |  | 561 |  |  | 1,252 |  |  | 633 |  |  | 1,329 |
Diluted weighted-average number of shares outstanding (1) |  | 146,120 |  |  | 146,173 |  |  | 146,088 |  |  | 146,158 |
Diluted EPS |  | $ | 1.17 |  |  | $ | 1.17 |  |  | $ | 3.33 |  |  | $ | 3.63 |
(1) | Includes dilutive shares from RSUs for the three and nine months ended September 30, 2019, and from RSUs and warrants for the three and nine months ended September 30, 2018.
For the three and nine months ended September 30, 2019, 564 thousand and 277 thousand weighted-average shares of anti-dilutive RSUs, respectively, were excluded from the diluted EPS computation. In comparison, 7,344 and 6,371 weighted-average shares of anti-dilutive RSUs, respectively, were excluded from the diluted EPS computation for the three and nine months ended September 30, 2018.

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- Definition Stockholders' Equity and Earnings Per Share [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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