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Net Income Per Share (Tables) | 3 Months Ended
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Mar. 31, 2015
Earnings Per Share [Abstract] |
Reconciliation of Common Shares Used for Basic and Diluted Earnings Per Share | The following table provides a reconciliation of the common shares used for basic net income per share to the diluted shares used for diluted net income per share:
| Three Months Ended March 31,
| 2015 |  | 2014
Weighted average number of common shares used for basic earnings per share | 45,156,202 |  |  | 45,042,823 |
Effect of potential dilutive shares: |  |  |
Warrants | 1,751,798 |  |  | 1,998,028 |
Stock options | 12,841 |  |  | 4,891 |
Restricted stock units | 25,013 |  |  | — |
Performance stock units | 3,145 |  |  | — |
Weighted average number of common shares and potential dilutive shares used for diluted earnings per share | 46,948,999 |  |  | 47,045,742 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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