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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Components of Earnings Per Share | The following are the components and results of Customers' earnings per common share calculations for the periods presented.
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
(amounts in thousands, except share and per share data) |  |  |  |  |  |  |
Net income available to common shareholders | $ | 20,048 |  |  | $ | 20,107 |  |  | $ | 40,575 |  |  | $ | 42,240 |
Weighted-average number of common shares outstanding - basic | 31,564,893 |  |  | 30,641,554 |  |  | 31,495,082 |  |  | 30,524,955 |
Share-based compensation plans | 807,258 |  |  | 1,910,634 |  |  | 823,245 |  |  | 2,129,773 |
Warrants | 8,511 |  |  | 17,464 |  |  | 8,566 |  |  | 27,318 |
Weighted-average number of common shares - diluted | 32,380,662 |  |  | 32,569,652 |  |  | 32,326,893 |  |  | 32,682,046 |
Basic earnings per common share | $ | 0.64 |  |  | $ | 0.66 |  |  | $ | 1.29 |  |  | $ | 1.38 |
Diluted earnings per common share | $ | 0.62 |  |  | $ | 0.62 |  |  | $ | 1.26 |  |  | $ | 1.29 |
Anti-dilutive Securities Excluded from Computation of Earnings Per Share | The following is a summary of securities that could potentially dilute basic earnings per common share in future periods that were not included in the computation of diluted earnings per common share because either the performance conditions for certain of the share-based compensation awards have not been met or to do so would have been anti-dilutive for the periods presented.
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Anti-dilutive securities: |  |  |  |  |  |  |
Share-based compensation awards | 1,069,225 |  |  | 288,325 |  |  | 1,069,225 |  |  | 282,725 |
Warrants | — |  |  | 52,242 |  |  | — |  |  | 52,242 |
Total anti-dilutive securities | 1,069,225 |  |  | 340,567 |  |  | 1,069,225 |  |  | 334,967 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + 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 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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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